The BG caps are in the main player, and are the signal path gremlins early on. The tubes break in in a matter of a few hrs max, and the "lesser" caps in the power supply will be done in less than 40 hrs or so. Dan may want to add his $.02 (ok...for Dan, $2.5M).
Ted
P.S. Congrats, Mark, it's an incredible machine...and the video isn't bad, either, due to Dan's loving care and the Bybee AC's.