I thought that was the thing to do with the seals. When I took the engine apart it had the inside seal still in place on the rear bearing and I couldn't figure out how lubrication would be put through to the front bearing or shaft for that  matter. I fly this motor on a 60 sized inspire which by the way is a fantastic plane. It does not require very much throttle from the 91 to do anything I want or am able to do so I never pushed it very hard. I heard something weird so I grounded it and took apart. Glad I did, If that bearing had come all the way apart I think it would have dumped the bearings under the crank balance weight where clearance is nill.Again I have to thank all of you for your help and to Jeffie 8696, I really don't know yet about the tach readings as I have been doing it the red-neck way, by ear. But after the advise I got from w8ye I shall have to borrow my dads tach this morning. I will let you know. Also just a note, I am just about done with my new plane, a Fun-World 40, and we are gonna try a new motor on it. I bought a Aviastar 53. Advertised at 2.45 horse-power at a cost of $69.95. This too I will have to see to beleive but test bench results are so far very impressive. Thanks again