I just purchased a fairly new engine, used for 90$. The St2000/25. I went to the web site and there is no docs or info on this motor. The prop shaft is rather large with a 25/32 dia. It looks to be set up for no nitro fuel also, it has a hall effect switch and pickup mounted on the front. The compression is excellent and it looks to be very clean inside. Now for my question, I want to run this in an Edge 540T from GSP. The problem is the prop hub, with the pickup in the front it sticks out 1" from the cowl. Where can I get the original hub? I was going to ask about setting it up but I found the artical in front showing this. Also what rpms should be expected with the prop range of 18x6 20x5, Thanx..

Dave G.