Realistic TRC-465 VCO

Hi:

I need some help in the VCO area to stretch the range about 100 Khz up or down

I have 3 of these little SSB Radios 2 TRC-465´s and 1 453

I installed a board to get Hi Band and Low Band and works but the VCO is shy of 100khz or the last 10 channels of the Hi Band or short 10 channels in the Low Band

Also I need a good modification to open the clarifier without loosing to much stability,I know it will drift but I hope not to much

The board that I installed gives me +5 or +10 Khz and...

Realistic TRC-465 VCO