The Evolution PTS engines are pretty good once you do a few minor things to them.

1 - Remove the limiter "Pin" and throw it away!
2 - Loosen the grub screw on the blue anodized limiter and pull it out slightly ( with it still in place it will prevent the needle from moving in )
3 - Remove the clip on the HS needle, squeeze things a bit to make it clamp tighter and so the clip holds better against the detents.
4 - Put the clip back on and put a grommet around the clip and needle to prevent the needle from "walking" in flight.

The major problems with the PTS engine involve the limiter, which in turn forces you to tune the engine poorly OR that once the engine IS tuned the needles come loose and move in flight. The above minor mods fix this.

BTW: There is no need to remove the flywheel. It helps smooth out the idle speed a lot, but unfortunately Evolution let this result in poor out of box tunings.