The pump came with instructions from these people. http://www.calas-hp.se/
Thanks for downloading the picture. Sooner or later I will get the hang of posting pics.
I heard the same thing about the 3 piece rings. I already had the engine together with the old 1 piece ones.
So far I have not ridden behind it to see the smoke but I can't see any from the riders position.
The oil level has not changed enough to tell in about 300 miles.
I will report more after the long HOT Georgia summer.
If you are reading, I still wish the pump had come from you.