Hi all, I have a Princeton Reverb RI that I've messed with quite a bit (re-covered, 12" baffle, OT upgrade). One of the things I did was change the OT for a Hammond P-1760H (https://www.hammfg.com/files/parts/pdf/1760H.pdf). It's got 4/8/16 ohm outs. Basically doing the DR OT mod, with the added bonus of multiple impedance options. The 8ohm tap works great and I quite like the tone change. When I use the 4 ohm tap with 2 8 ohm speakers (i.e. the internal speaker and an 8 ohm cab) it is super quiet and distorted. Did I wire this incorrectly?