I just bought this bike a couple of days ago. Ive been working on the carb and have it running better. but im still having the same issues with idoling and hot start. Im getting ready to check the valve adjustment. I have been told that if they need adjusted they need replaced. IS THIS TRUE? I have read suggesting to shim and adjust them which isnt a problem but a tech at the local dealer said if they need adjusted they wont last more than a few days? Would the valves be the reason this thing is so hard to kick over? Once i get it started it run's awsome and seems to have a ton of compression.