RE: How many RPMs on the ground for a West .50V1 with an 8X10?
Yep! Been there done that. The mixture might be fine at WOT (look at all the smoke!), but then goes to seed at mid throttle settings (where's the exhaust trail?). It's worth paying careful attention to the low speed mixture. Sure there's less heat being produced at mid settings but too lean is still too lean.
MJD