Yeah, international shipping can be a nightmare, I bought a Colnago frame on that evilPlace once, twice it was sent and returned undeliverable, both me and seller were tracking it both times to US and back, while USPS could not find it or tell me why it went back. Eventually I have up and took full refund.

I can wait, just thinking how much lead time I need and it will decide when I tear it apaprt

This is why I need the powervalve parts, it seems some ShadyTree (tm) repair service could not cope with left hand thread