I have one of those and it's a real stump puller. I bought it through Morris when they aquired the PowerHouse line from Rossi. I usually get a set of bearings when I order a new engine. Morris didn't have the bearings so they sent me an entire crankcase with the bearings in it for the price of the bearings Now I have the case, the bearings, a new piston and liner, head shims, and a tuned pipe and adapter. Also have one of their .45's. I'm set for awhile if I need an engine. Once you get them set up they run like crazy. Don't use much nitro and not a bunch of castor. Recommended and what I use are 5% Nitro with 18% oil, 20% of that oil being castor. Works great for me. Have a good weekend_bob