[Heathkit] SB-102 mods

[Paul Kraemer]

Have encountered several modifications to an SB-102
Not being intimately familiar with the 101 / 102 I am asking group for 
anyone recognizing the mods and their possible validity
#1 An extra trim pot in series with the original S meter zero. There are 
several other resistor changes as well.
#2 An added trim pot added to the board near V19. Turning the pot changes 
the frequency.
As always, any contributions on resolving this sincerely appreciated
Paul K0UYA