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Way too many possibilities, especially with a description of "won't work." If the bike is brand new then you should be taking it back to the place you bought it.
That's only two teeth different than the compact cranks that are out there now. I have a 50x34 on one bike and it shifts fine. You have to be careful to use combo's that dont drop too much chain slack for the rear derailleur to take up. I never cross more than one gear past the center on my 9-speed. I don't know why I waited so long to go with compact. I love it.
You may find that your crank won't take a 34 unless you already have 110mm bolt pattern instead of 130mm. 39 teeth is usually the lower limit for 1340mm. Look around on eBay for a specific ring that works for you.
log onto Shimano.com, it is probably the limit screws (the two screws that limit travel) or you have a faulty ratchet in the lever, try the shimano website anyway they have great tutorial and manual support
Lube/replace your cables and housings. If your housings are getting rusty on the inside, it will prevent the tension in the spring of the calipers from returning the brake levers to "home" position. Also, dura-ace levers have an internal return spring that is prone to breaking or coming off its peg (this can't be repaired without disassembling the lever).
Make sure your calipers are clean and move freely, and have sufficient spring tension to return to "home" position.
Be careful not to get lubricant on the braking surfaces, obviously.
As an experiment, remove the wheel and pinch the calipers together with your hands. Then, check to see how loose the brake lever is.
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