Greg My LMH 100 vmax 6 is actually .061 it ran to hot it to second hand threw it out and bought a new .074 vmax up grade kit.I run all my egines in on a test stand flat out, prop for this is APC 7x3 I believe when there being run in on the chopper the oil is not getting to big end properlly because of the downward faceing motor this my idea anyhow, other's may say different. Fuel mix my own 20% castor oil, 25% nitro, rest methenol. Your case being cold would sugest 10% castor and 10% sinthetic,Powermaster, 25% nitro. Hope this help's.. Bob...
CrocEnd..