Originally Posted by
2fst2c
I'll double check that. It is a new P/S/R I put in and went through the break-in with. Has about 1-1/2 gal. on it now. Broke it in on a bench for 1/2 gal. ran it around for the next 1/2 gal and then tuned it to Flush on top, 1-1/2 on bottom and it ran fine for 3-4 tanks and then this problem developed. I'll break it back down and double check the piston etc.. Thanks.
Of course there is always the other option, just go flush flush and tune it again but this time tilt your head the other way. when i run into any tuning anomolies i just go back to base and start again. you say that the engine has run fine before so the tune may be it.