I'm sure its me, but I cant keep this thing running.This is reference to my YS fz-91.I bought it used here on RCU ,and bench ran it.It ran great on the bench,not so in the plane.After many changes and attempts with the fuel supply lines I am pretty sure I have it correct now.But it wont stay running.Goes from a lean sounding idle,when speeding up a little,it explodes power and quits.I checked the lines,klunk etc.I have read various reports of these engines being very tempermental,unfortunately I dont have the time to waist,been at this off/ on before Christmas.Any suggestions will be greatly appreciated.Already thought changing to another brand, but I like the power I think this will produce. Thanks