RE: TT Pro needle valve
Ace will not sell retail they only want to refer you to some web stores that either do not have a telephone or will not answer the phone and will not accept a real credit card, only pay pal.
Last year it took me six months to get a new cylinder head and only after all that wasted time did Ace reluctantly sell to me saying what a favor they were doing for me, Huh.
Last year I purchased 15 new engines 12 of which would have been TT Pro's, but not after their apparent policy closing the door on customers who need to work with a phone and a real credit card for their part needs.
John