After replacing the LSN and the spray bar -although brand new- in my Saito 100 I managed to have a decent lean low speed tunning and hence good idling at 2 - 2,200 rpms.

However, I would agree that this engine has an internal vibration issue maybe because of not being best crankshaft callibrated (at least mine).

With less than 5 gallons of fuel through it I am about to replace the bearings for the third time!!!. Crankshaft becomes quickly very lose to the bearings and engine rattles.

I really do not care about the engine being destroyed (i.e. rod brake-down because of the problem) but I really do care about my plane in case of engine failure (a nice GP Super Skybolt costing 330 euros).

Stelios