After procrastinating for too long I finally decided to tackle the seam rust
problem.  I have been purchasing materials for some time and the rust was
only getting worse.  So, I started cleaning out the seams from the exterior
painted side.  Then I realized that the problem has to be from damaged or
worn undercoating.  What do you recommend for recoating all affected areas? 
I remember using spray stuff 30 years ago without good results.  I would
think there must be a good quality brush on material.  Thanks.

 

Larry

87 Westy