i don't know where else in project to put this but here it goes
so i got this 6309 dress watch the other day (thanks Dan) and the movement was beautiful and for 1.5 days it kept great time. but then one day i wore it and about half way through the day it started fogging up. so i took it off set it on the dashboard hours later still running and not fogged up i put it back on. then it fogged back up, it was late so i went to bed. in the morning still running i took the movement out and let it sit with silica in one of the plastic containers i have for movements, also on movement holder.
finally the PROBLEM --- now it won't run for more than 2 minutes without vigorous shaking.