[Hallicrafters] SX-28 Mods

[Greg Humphrey]

I am refurbishing an SX-28 that has seen better days. It would seem to have 
been attacked by not only mice but also by some previous
owner. I read in the QTH archives of some mods that were performed on these 
beasts (BFO and Product detector in particular)
Is there some definitive listing of these mods somewhere so that I can 
reverse engineer them?
Regards
Greg in South Australia