Hi, just to preface I'm not talking about on pin5 on power tubes. I attached a picture below and i'm wondering if this in theory should be identical to having the regular 68k input mix resistors? This amp use to squeal quite a bit turned up. so the 68k input mixers are disconnected on the board and are instead two 33k instead of two 68k resistors on each channel connected at the input jacks then leading to their own 10k grid stopper on v1 preamp tube as well as another 10k grid stopper connected to v2 preamp tube (three 10k grid stoppers all together) The 33k compensates for the difference with having the extra 10k grid stoppers? How accurately would this reproduce the stock sound of 68k input resistors without grid stoppers?