I have an Ameritron AL-84 that needs an overhaul or rebuild new caps ETC. Where is a good place other than Ameritron to send this amplifier for its repair? I am also looking for some older tubes I need 4 matched 6MJ6 or 4 matched 6LQ6 I have found some on EBAY but I was thinking of asking for more possible places to get them in case I would miss out on the ones I found.