Triode conversion for VTL Renaissance 80 monos

These are decades out of warrantee. I called the company this AM and they were most unhelpful. For $150 and shipping both ways, they'd look at one monoblock and SEE if it could undergo conversion to triode mode. You'd think someone there might know, but I guess not. I've given up on the idea. Happily, the amps sound gorgeous in their present mode, which must be tetrode. I've decided to be happy with leaving well enough alone.

Thanks to all, especially to Mrtennis and Pryso. I may try the technician route. It may come down to whether the power transformer has a certain "tab", to judge by what it takes to convert a Dynaco Mk III or Mk IV or Stereo 70 to triode operation. For them, it involves removing one wire from the transformer to pin 4 of each output tube, then putting in a 100 ohm carbon composition resistor between pins 3 and 4. Really simple, and maybe the VTL is no harder--but I'm not just going to do that and hope for the best. I may have spoken to Bea, certainly not to Luke. The lady I spoke to seemed to regard the Renaissance 80's as something that was produced by unknown individuals in a distant country, or even on another planet, and nothing to do with VTL and its operations now.