Ran the .24 FM today and realized something, the Big Boy is NOT the pipe for this mill at all. I so struggled with the tune and at best it was flat. I put on a TTR 2035 and you wouldn't believe the difference. Idled better, tons more snap and better top end. All around so much better. I have a Big Boy for sale from the first shipment that doesn't break the baffle off if anyone wants it.