I finished up my tseii build about a week ago and it is running and sounding great. I have a question about the choke though. It is buzzing loud enough to hear from 5 feet away. It is a mechanical buzz not through the speakers. It is also getting pretty hot after an hour or two of running the amp. Are these signs that there may be something wrong with the choke itself or maybe something wrong elsewhere on the amp? Im running 300b tubes at around 400v and 70ma of bias. I should be well within the specs of the choke. I also double checked the bolts holding the choke down and they are nice and tight.