What size jet for an lt80 with a hetrick pipe ? It sputters out on the top end a little .. To much fuel or not enough?? Thanks guys

 

A sputter is usually not enough fuel.
I would have thought that stock jets would work.

 

I was having a sputter on top-end also so I had thought it needed more fuel so after going to a fatter jet it got worse.I went the other direction and it has almost cleared up completely.I'm gonna leave it alone cause i'm afraid to go any leaner.It has a 77.5 main in it now.It would probably help it more but maybe it will stay together longer being a little fat on top.

 

To add:: Brial has a modified motor which allows a jet change that radical.
You can try a 90 or 87.5 main.
Have you adjusted the needle?