I ran the MS250 a little today

[SawTroll]

Oh, on another thought, what chain are you running? That saw should run RMC, but is usually sold in the US with the crappy RM2. If your saw is running the latter you need to get an (25)RMC, or even (25)RSC on it before you sentence it to return. If Oregon, then the chain should be 21BP (=RMC) or 21LP(=RSC).

The chain makes a big difference.

Sure, but I think what that saw really needs is the .325NK setup (95VP)...