United Home Audio tape deck upgrades

Feeling the waters with folks, that may have sent a deck to Greg Beron @ United Home Audio for upgrades they offer on any deck?

I have a Tascam BR-20T, which is the deck Greg uses to hotrod for his UNA decks and was curious if anyone has had experience dealing with them and if so what kind of upgrades/results did you have?

Cheers, Travis
Greg is a stand up guy. His decks are the best sounding decks available today.
Greg is superb to deal with. Just received my Phase 12 deck which is a stunning piece of audio gear with a sound quality that is second to none. Its been fully tricked out with OPS/ VariQ etc - refer to the UHA website for a full explanation of the upgrades. You are basically getting a brand new R2R with a warranty. My only regret is that I didn't get one a decade ago.