Adrian, do you think my little piggy-back board will do the trick? If so, I can post the design and Gerber files for anyone that wants to install these. I'm using a 1500W TVS isolated with Schottky diodes. The diodes only have 15pf capacitance, so the total of 30pf shouldn't hack the signal up too bad, looks like about a capacitive reactance of 1.6k at 3.27mhz.