Ron,
 
Ever try a frame cleaner?  I realize this is too obvious, but I'm taking
a chance that you may not know about such a tool - it was 10 or 15 years
before I bought one and I often run into members of my association who
have never heard of them.  Frame cleaners - little L shaped tool offered
in most catalogs for about $5.  Used for scraping the grooves in frames.
As my grandad used to say, "anythings easy if you've got the right tool!"
 
Apologies in advance if this is too obvious.
 
Sincerely,
Aaron Morris