Maybe you need to try more hand positions. My high climbing position is bar tops, elbows bent and in. My most common position is hoods, either standard or side grip. I'll use the side grip when going a little faster on the flat. Elbows bent some. Next position down would be still side grip on hoods, forearms close to level, wrists resting on bars. I'll usually scoot back in the saddle for that position. It's pretty much a wash for aero speed between that position and ordinary drops position. Next thing down would be deep in the drops, chin close to stem. So that's four positions at varying upper body inclinations.
It might be that you need more upper body pushing strength i.e. pushups, triceps extensions, dips, dumbbell bench and incline presses, that sort of thing. Or maybe more core strength, i.e. horizontal rows, hyperextensions, back machine, straight back incline sit-ups, that sort of thing. Or maybe try more hand positions. Here are two favorite links - you can ignore the hand pain and pedaling things and just look at position:
http://www.bikeforums.net/road-cycli...l#post12953035
Top photo is standard hoods, bottom two are side grip hoods.
https://www.youtube.com/watch?v=z04uoO7U_SA
Bike setup and position starts ~3:20.