i have a trinity 24.it ran graet for about a halve gallon.but the last couple weeks i have been fighty to tune it.with stock needle settings it is way lean on the bottom.i have to turn out the low speed needles about 12 hours.somthing popped up today.it wont stay running when you it the brakes.i am feed up with engines. i am going back dyn. xpthat ran a hole lot better.any help would be great.