My bike is breaking down alot

Could be the HT leads are at fault.

sounds like a fuel issue, how long has the bike been sitting? You said it is worse in certain weather conditions, so i don't think electrical would act up in different weather conditions. I am not sure if your bike has carbs or fuel injection. If it has carbs, you most likely have dirty pilot jets.

That's a Misfire more then likely, A spark plug , or a coil breaking down or a plug wire if your vehicle has them ! Most vehicles have done away with spark plug wires an now have a single coil per cylinder called coil on plug ignition .Have you ever had spark plugs replaced ? If the spark plug gap becomes too worn (large) it can cause the high energy spark to find a path with less resistance . This high Voltage can back feed through the primary side of the ignition coil causing the driver (transistor) inside the PCM - engine computer to short out . This will cause you to have an expense you don't won't . Buying a new computer can cost several hundred dollars .

HT Lead, Coil, or plug faulty.

sounds like carb needs stripping and clean , fit a new spark plug and put new fuel in !

please change the spark plug first as its life is over...dont listen to the mechanic and the battery should be in good condition

I have a '05 Silverwing 400, while riding, the engine cuts off, FI light shows and it cranks but will not start up anymore. I've checked whatever I can to figure out the problem which includes side stand switch, relays, fuses, stop switch, fuel pump, coil, swapped a CDI with another Silverwing(this bike has no immobilizer) CDI from mine works fine on the other bike. There's no spark, FI lights remains on. Anyone encountered this problem?? I am at a lost.

try new plugs also maybe a different plug also check air filter is clean