Hi Troy,
When changing from a 20% nitro content to a 30% should one keep the 300 RPM off the peak principle or richen it out any ways?
In other words, when changing from 20/20 fuel to 30 Heli one should richen the settings?!

YS 63 FZS runs great
YS 45 FS runs great - a bit problematic on the idle

Thanks in advance
Brian