One Leg has loss it's grip.

Contact the importer or manufacturer, telling them the exact make and model number, plus a full description of the problem, with photos if possible. Alternatively, take it to a nearby camera shop or repair facility.

Carolyn
-If you are looking for a compact light weight (CF) tripod for video...., that is going to be...., stable & durable (for use with a smaller video camera or a DSLR) & with a mid-level spreader...., I have some bad news for you. They do not exist!!!!!
-You can get a number of tripods that meet some of these requirements..., but not all!!!
-No fear....., it is still possible to get a tripod that is small, light, repairable and with a higher weight capacity and better durability than either of the Manfrotto tripods you mentioned..., but they will not use a mid-level spreader!!!

-Questions for you...., the manfrotto #055CXB has a column that terminates with a flat plate & a 3/8-16" thread. The Manfrotto # MTV502AM tripod has a 75mm bowl mount. Do you use a video head with a flat base or with a 'bowl'?
-If your head has a flat base consider looking at CF tripods from brands such as Sirui (#N2204 or #N3204)..., great value tripod from China..., or products from Gitzo or Really Right Stuff...., (superior products...., and your grandkids will be using them..., but pricey)!!!!
-If your head uses a 75mm bowl mount get the Miller #1501 tripod...., stupidly strong and well supported.

-Bottom line..., with light to mid weight cameras, if you go with a good quality spreaderless tripod that uses 'rotary locks' vs 'quick release' locks...., the leg mechanisms are so superior that you will find that you will get less flex than most tripods with spreaders. They will also be smaller, lighter and allow you to shoot far closer to the ground!!!

Go t a shop that has a good selection of quality tripods and test for leg twist..., you will be converted!!! (note: to test this leg flex..., extend the legs & grab hold of (2) of the tubes near the top 'crown' and then try to move the legs to the left then right...., many will exibit significant flex at the joints!!!!

loosen the allen head screw for that legs snap lock

www.bogentripodparts.com you may need a new leg lock, you have to loosen it enough and the leg should come out. Send us some pictures at [email protected] and we will probably be able to set you up with something.

If it was second-hand or pre-owned, the previous owner may have applied some form of lubricant to it. From a look at the images on the Net, it appears that the upper sections are adjusted by twist grips. If this is so, just unscrew them and separate the leg sections carefully, after which they can be cleaned. There may be a bevelled collar within, to grip the section - be careful with it.
The bottom section seems to have a standard lever lock. There should be a couple of screws holding this to the middle section - loosen these, then slide the leg portion out and clean it as well. When re-assembling this part DO NOT over tighten the screws - just enough to prevent the locking collar from moving.

If you notice, the legs locks are attached to bothe the upper part of the leg and the sloghtly smaller diameter lower. Take a socket (8mm I believe) and tighten the lower 2 nuts to the bottom of the leg lock.

There should be a nut on the other side of the housing of the tightening lever that you can tighten. Turn the lever to unlock the leg then start with 1/8 th turns of the nut to tighten, then turn the lever to lock the leg. Do this until you get the desired locking.

does anyone know were you can buy spareparts for a sunpak flash?

I am not sure what kind you have but mine there is grips around the legs you grap and turn and the other one I have has a handle you flip un or down I hope this works out

Vivitar has been out of the tripod business for a few years now. They may no longer have the parts. You may be able to find another V900 and scavage the parts. Make sure the model numbers match exactly. The V900SE is a different year and does not share the same parts as the V900.