Originally Posted by
cycling2012
thank you for your advice.so only one left side shoulder pain or numb ,is that related to the handlebar and shift lever angle?
Who knows? Your shoulders are obviously different in some way. I'm suggesting you make some changes, putting yourself into a normal road bike fit. If that's the identical fit your fitter has you in, obviously don't bother. But if it's not, give it a try.
Shift lever angle? You mean the location of your brifters? Set them up so they look like this:
https://www.bikeforums.net/19145009-post3.html The levers are approximately vertical and the tops of the hoods form an extension of the bar's ramps, continuing forward in a more or less straight line.