Fueling and Air overhaul imminent. looking for any advice

[Houtman_imp]

If you had a angle grinder or normal grinder you could have ground down the ring spanner to make it fit. Is the clamp too big and therefor you can not tight it down enough or does it need a gasket in between the ring and exhaust , I do not know precisely what you mean with not being able to tighten the ring. This is only to help you and not mend to insult you but having the right tools available will prevent a lot of frustration and extra cost when working on your bike/car.