Great post, those are the guidelines I follow. I run a mix of premium pump and race gas in My banshee, CR's and the Chainsaw. Gas is pretty crappy nowdays. My stock head is milled and rechambered but the compression isn't real high. I honestly can't remember. But when I'm putting a bigger load on the machine like sand I go with the richer mixtures for any machine I'm running. The chainsaw calls for it, and whenever I use it it's getting flogged, so that's just a good idea. For hard pack and general trail riding when I'm not running wide open almost alld the time I go 50 to 1. Baisic motorwork for my banshee, I'm not the fastest or slowest machine out there. But I can beat the kids on 450's and that's all I cared about Some ppl on here have alot of miss -placed aggression too, lmao