I know 32:1 is considered a good ratio for 250's and that's what I'm running now. I'm using Klotz R50 premix. I ride a lot of sand dunes though, and push my bike waaay harder than I should down there! Regularly pinned at max rpm and full load. Would a Castor based oil be a better choice for these conditions? Should I add more oil to the mix? I was considering switching to Maxima Castor 927 @ 24:1, and jetting accordingly. Help!!