Jake,
visual inspection pa lang score na agad paps...
garalgal talaga kasi cut off yun isa el34 tube kasi sira yun relays ng triode/ultralinear mode, baka binulutung (pitting yata tawag dun) na yun contacts. "baka" kasi can't confirm sealed type po siya...
two ways to go about, either condemn the darn triode/ultralinear function and wire it in full-time triode or ultralinear (ikaw pumili) or replace the relays so you can still switch between triode and ultralinear. if you choose the latter then I would suggest we at least get an Omron or a Potter & Brumfield for reliability.
please let me know, I will move on muna to another project while waiting...