I hav e a Fl 2100B. It has new tubes, power supply upgrade kit installed and a new HP2-DC12V relay installed. Plate voltage is great. Trouble is when the PTT is pushed on the Yaesu FT 101E the relay does not open. I believe the relay is correctly wired, but it does look like someone has been in here before us. Anyone run into something like this? The 101 works as it should.