Formula03

Well, have been noticing a miss that starts about 5800 and goes to the shift at 6500. Its like it is studdering, kinda sounds like it is hitting a rev limiter but its not. I just replaced plugs (NGK TR6, .040 gap) and coil (MSD blaster) and it ran fine for about 3-4 runs now it still cuts out about every other run. I did notice that the lights are flickering, so I am thinking that the alternator is going and I will be changing that tomorrow. I datalogged it tonight and the volts were ranging from 10.3-12.7, mostly between 11 and low 12's, would this be causing the cutting out? I also had a trouble code, 36 HI res failure. I erased it and it didnt come back. I also noticed that the spark advance was going all the way to 42 degrees and this seemed abit high to me, what is everyone else running?

Formula03

Anybody have any ideas?