Dropped it down to a 72 and got it back to 33, and i think it may have just a few more rpm to go for it to variate fully so i can try the 8 gram weights in it. I do still want to shave the deck because the C/R is still down around 8.5, would like to see it around 9-9.5.
Will try the weights combined with a 70 jet and see if it keeps trending upward, but 68 seems like a small jet for this setup in 40 degree weather does it not? I got it registered today so i can be a little less careful with my test rides.
The way i understand it is the expansion chamber has a big effect on max rpm so it makes sense if the stock one falls off at a certain range, I did de-restrict the blunderbuss.
I also have an inductive tach on the way to see if i can get any info from that.