My 93 is having problems
 

I have a 93 R1 and just got the engine rebuilt and after I got it back it does not run right. When ever you start the thig up it will feel like it eather detonating or misfiring and if you turn the ignition of and right back on without the engine cuting off it will fix it self. I had it a frined of mines shop and he done some trouble shooting but nothing came up. If anyone had that cind of problem or know what in the world is going wrong please help me.