Did you get this figured out?...I did the same by replacing the band pass and low pass for 20 meters...when the VFO is set for 2 MHZ I get RX on 20 but on LSB...So I move the VFO to 26 Mhz and I get no RX. So I am betting the ?VFO amp is not working at 26 MHZ. I realize I can move the IF frequency to above 12MHz...