Originally posted by Taylor-Racing
The after run always leaks out the front bearing on our NSR. That's pretty normal, I'd think, 'cos I usually put plenty in. 
What are the symptoms of your "slow" engine?
This engine has absoultly no punch or top end it seems to struggle to get to top revs as if the engine is running slow. I have a RRL3 and it eats this engine for breakfast. My only thought if it not the small leak in the front of the bearing is that i have run it in incorrectly.
My run in process was
1Litre of 5% nitro with castor oil using the W.O.T method
then on to my race fuel which is
16% nitro synthetic oil
I have been told that this way shouldnt make it run bad.
Or could it be my plug i am using a 6tc nova plug?