Ok, I need some help to setup a 170cdi. No its not my motor, but a friends honest!

It has an 18x10 mezjlik on it, running CP 30% heli fuel. Top end is nice and smooth about 8300 rpm (probably can prop up a bit), idle is good will sit nicely all day at 1700 ish (maybe lower didn't check). At about 50% through it hesitates, if you work the throttle a bit it will move past that point and continue fine on up to full throttle. Its not so much a burble, but more a misfire? We fiddled a little with the pump, and high speed to no real avail. Seems when the motor is cold it doesn't happen, but after it warms up a bit then it starts. HS needle is around 1.25 out, its very responsive, easy to hear peak and easy to set.

Since its running so nice at full and idle I didn't want to play with it too much, as it seems to me to be more ignition related? Ignition is being ran directly from Rx power. Last glow I ran was a 160dz, and that was a few years ago, so I am getting out of my element! lol

Thanks!