Working on a Thunder 1 RVT, only getting 180 volts out of the rectifier tube, it's a brand new JJ. Any ideas? Line voltage going in is 120 to 130, did a downstream cap job but none of that work should effect the rectifier output voltage. Dropped the old Guild r drifter tube on the concrete, no way to put the old one back in now to check it. Can't imagine a brand new JJ would be the problem anyhow. Someone before me has replaced the 47 ifs electrolytic that connects to pin 3, looks fine, grounds all check out good. Hum pot has no effect on volts out. Any ideas or guidance would be greatly appreciated.