Finished up the Sex this morning. All resistance reading are spot on except A6 which reads 8.17. B6 reads 1.26 which is on the money. After a couple of hours I give up. Switched the tubes but no change. Everything else seems go to go. Wasn't sure it was safe to do a power up, so haven't done the voltage checks. Bad resistor? Don't think I fried it but who knows. Any suggestions at this point would be welcome.