Does anyone know if you can change the insert on these l love my 300 but it is a bit of a handful at times was thinking about going with the low comp version which should hopefully soften it off, already running a slow throttle and flywheel weight 

 

I have one on my 300 Beta and it helps. Low RPM power is still all you could ask for and the hit on top is still plenty. Only odd thing is wide open top of the rev range it starts misfiring. Not sure why but it might be the lower compression head is slowing the flame front so not fully burning the mixture. Haven't really figured it out yet and since it's only an issue chasing fast friends down fire roads it isn't a bother.

I do recommend the VForce carbon reeds. I know the same cage fits the Sherco and Beta. It smooths out the power and lets the bike pull a gear higher. Makes it almost impossible to stall.