You really should be running a minimum of 50%, and even then I'd say that you aren't potent enough. Even in winter, I go down to 75%, but 99% of the time I run straight methanol.
and realistically i think this is the only way to go even though DO says against it for legal reasons. running it straight was the only way i was able to make good use of it. and it smelled awesome at WOT.