Not so far, but the vibration is higher than usual for any engine I owned. I am checking the header and canister after every flight.

It also transmits vibrations into the fuse through the canister, which is not good...

I am having a heck of a time finding the right needle settings. I have some weird missing or surging at about 1/3 throttle that I cannot seem to be able to get rid of. I went to both the righ side and the lean side and nothing seems to help.