So I completed my first Bottlehead Moreplay kit a couple weeks ago. It has been wonderful until today. I have noticed static on the left channel. All voltage checks passed, and swapping tubes does not fix the problem. Just curious if there are any common problem areas I should start with before I go too deep. It only seems to show up if the volume is above 9 O’clock on the dial. Thanks in advance for any help with this issue.