I've been going through my amps, a few of which have been stored unplayed for years and need to find someone with knowledge of the 1955 Bassman. First, the tube chart is gone so I'm not sure which circuit it is, but it's got to be either 5D6-A or 5E6-A (two rectifiers) (?). The preamp tubes as far as I can figure should be 12AY 12AY 12AX/7025, I have one 12AY7 in the first position, 12AX7s in the others. Back in the day when I used to play it out an amp tech told me to swap the 12AY7s out for more gain, and I only had one extra 12AY7 on hand today. I'd appreciate it if anyone who has owned or serviced one of these to offer some opinions on what tubes they liked best in them. I'm wondering if it's okay to drop a 5u4 and go with one for a little more sag if desired. Alas, I blew the original speakers years ago but still have them. If I can get the money up (amp rich, cash poor, but am not selling any of them at this time), who would be the best person to speak with about re-coning them? Btw, have Mojo Tone MP10-Rs in there now and they sound pretty good. Got some problems with a couple of the pots, the place I had the amp stored in wasn't the best place for it, a source for replacements would be nice. In spite of the oldness and storage and pot noise (the Treble doesn't even work) the amp sounds darn nice. Better than I remembered. Looking forward to hearing from someone familiar with these, thanks in advance. PS: A really great thing would be if someone out there can run a Texas DL number, there's one engraved on the control panel. Be neat if it was someone I'd heard of. This, I realize, is not an easy request to fill and very unusual, but I've been curious ever since I've had it. PS#2: Also, I was told a story about this amp when I bought it (Eugene's): back in the day when the rough brown Tolex replaced tweed Fender had a promotion which was: send the amp back and get it recovered in the "new" covering, plus new speakers, for $150. Sounds kind of shady, but then 3 of the speakers had '59 date codes and 1 had '55 (meaning, maybe one of the '59s blew and the owner put one of the originals back in, that would make sense. Also, the time Fender switched to the rough brown would coincide with the speaker dates, '59s would have been on hand around then). If any of the gurus out there have ever heard of such a thing, please speak up! The re-cover does look very "factory" in quality, to my untrained eye. The originality isn't that big a deal to me personally, since I bought it to play not to collect, but maybe I'd want to sell it one day. I've had the amp for about 17-18 years.