The 60FP was the budget OS before the LA series. Its a very user friendly reliable engine Not quite as powerful as other OS' in the sixty one size. This mainly because of a smaller venturi to assure good fuel draw for user friendliness.

It is a bushing type engine and has a bleeder carb without a second needle but a bleed screw for low end mixture control.

I would try an 11/7 first.

John