I'm using a Mojotone parts kit. The layout diagram has a 10k bias pot with a 33k resistor that is grounded/soldered to the back of the pot, and the chassis is already drilled in the right place to add a bias pot. However, the parts kit only came with a 56k resistor to use instead, and all I have on hand is a 50k pot. Any thoughts? Should I go ahead and add a bias pot, and is the 10k pot/33k resistor the best combo? Second, I am using a Hammond 290CAX PT that has dual 630/550v primaries @ 115mA. Would there be any benefit in wiring the dual primary on a switch for a hi/lo power option, or would that just cause trouble with the bias? Since this PT didn't come with a 50v bias tap, I have thought about just doing it cathode biased, but I think it may be getting too close to my Deluxe territory if I do, and I'm not wanting 2 of the same amps. That's all for now, so thanks in advance. Just for further info., I'm using the same Hammond 1750E, 15 watt OT that I have in my 5E3. This will also be a tweed cabinet build as well, but I'm sure the whole process is going to take a few weeks.