Monarchy Deluxe cleaning?

I had a pair of those, great little amp,though mine were A/B. I don’t recall anything really needing cleaning in them. Probably could ck the bias. There was a rectifier mod that may not have been done, ck with Monarchy they were pretty good at supporting their products. That was a few years ago though.
 
off the subject but my spectra 1100s blew a voice coil this morning :-( it still works but you can hear the drivers distorted if your right up close. do you know where I could find a replacement driver for one of these i dont care if i have to ship it or if its non original as long as the specs are close