Art, On my OMNI VI (about 10 months old) IF/AF Board, C25 is .01 bypass from the base of Q4 to ground. Is there a C25 bypass on the collector of your Q4? Also, the mod re the pass band tuning, did TEN-TEC say what the purpose/result of soldering the resistors to the other side foil was? 73, jim WB2TPS