TopBand: Drake R4C help

[Jim Fenstermaker, K9JF]

I have a Drake R4C with Sherwood modifications from about 20 years ago.
Used it on 160 for 10 years but think it got RF'ed a couple of years ago.
Need suggestions where I might get it looked at.  No schematics or info as
to what was changed.  The guy who modified it did about 20 receivers so he
doesn't know what mods this one had.

Suggestions appreicated.

Jim K9JF/7
jfenster@pacifier.com 

--
FAQ on WWW:               http://www.contesting.com/topband.html
Submissions:              topband@contesting.com
Administrative requests:  topband-REQUEST@contesting.com
Problems:                 owner-topband@contesting.com