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I just recently purchased a York Monster EEb tuba (Model 51, 3 valver) and was curious because of the hype and comparison to Kanstul tubas.

If I were to purchase valve cluster parts from Kanstul's 66T or 66S tuba, would they be compatible? Or are they quite different. Is it also possible to even buy valve clusters from Kanstul?

Experiences?
Advice?

I was figuring it would be close to or more than 3k.

Would it be too ridiculous to buy a 2341 clone valve cluster from any of the European/ American distributors of the instruments? Then have that cut to Eflat?

UPDATE- Got the York today and I love it even as a three shooter. Just makes me wonder if I'd screw up what I like already.

no I have not put a tuner to it yet