Questions on capacitor replacement


Looking for advice, recommendations, estimated costs, and DIY instructions for dummies on integrated amplifier refurbishment options. I have a Musical Fidelity A300 that I bought new and have had powered on for about 20 years not including the occasional move or vacation. I recently bought my first tube amp so I thought now would be a good time for a spa treatment for the A300. I’ve had this amp so long it’s like family at this point. Maybe I should build a retirement system for it.
1. Would I be stupid to try this as a DIY project? I’m not a moron or completely uncoordinated, but this seems like the kind of thing that can go horrendously wrong pretty damn quick for the inexperienced.
2. Can you recommend anyone in the Central or Southern California area that knows what they’re doing? I’m trying to avoid shipping it (even though I still have the original box).
I suppose at the very least I should blow it out and maybe clean the volume pots with alcohol. 

cat_doorman
The name of the tech at Brooks Berdan Ltd. is Tom Carione, and he’s in the shop on Wednesdays and Saturdays (his full time job is as a maintenance tech at a Los Angeles radio or TV (can’t remember which) station. Very knowledgeable, heck of a nice guy, charges reasonably.
Tom is an Ace !!!! Hyper efficient, great techs have a very organized and well thought out bench and hopefully a good ear as well. Tom is all that
There is great tech in San Diego also, works out of his house at a very competitive rate, has a pair of ESS monitors to check Sonics :-)  Mike Zuccaro - The Audio Craftsman