Currently in the process of buying parts to build a 5F1 clone, and trying to do it a bit cheaper than buying a £500+ kit. Bought a second hand PT on Ebay that said it would be a 'drop in replacement' for fender tweed amps, however I am having second thoughts about trusting the guys words. The secondary is 260-0-260 VAC output, which is significantly lower than the champ's stock 325-0-325. I plan to ditch the 5y3 for a ss rectifier, would a full wave provide a high enough B+? or Would removing the CT and implementing a full bridge be better. I couldn't find my answer else where so this is my last resort. Thanks!!