Neck pains and bike fit.
I've been riding a 52cm Motobecane track and would like to get a geared bike soon. I'm trying to use my current setup to gauge what size Vent Noir/Grand Record from BD to purchase. During long rides (20+ miles) my right trap and neck muscles get sore and after a few days becomes very tight. I don't have any issues with my knees, but my hands do get sore and sometimes a little numb. I've replaced the stem with a 90mm Easton stem as well as the handlebars and have ridden a couple hundred miles with this setup. I primarily ride in the drops as i feel i have more control with the bike. My riding style is primarily for long distance with hill climbs at the end of the run.
So my questions are:
What do I need to adjust/replace to reduce/eliminate my problems?
Should I stick to 52cm frame or go down to 50cm for a road bike. My track's effective toptube length is about 21.25" while a 52cm vent noir is 21.06". A 50cm vent noir has a 20.66" top tube. is that 1" going to make a significant difference as far as reach/comfort for me?
Any other suggestions and input is greatly appreciated!
Not sure if it matters but heres my competive cyclist fit numbers:
lower leg: 20.5"
sternal notch: 54"
height; 68" (5'8")