trouble starting in wet weather

["Adam" <acprice1@xxxx>]

My car has a lot of trouble starting after it has been parked in the 
rain. It eventually starts and idles rough then chugs until I guess 
the moisture is dissipated. I am assuming that moisture is getting 
into the distributer. When I do my tune-up, i plan to seal the 
distributer with high temp silicon sealant and prepare the inside 
with wire-dry and/or wd40. 

Could any of the things I plan to do to the distributer cause other 
problems??

thanks,
Adam