Actuallly , the fms loves 40% nitro
I think the key words in your statement were "not up to your standards" , and I will never dispute that the engines you prefer to work on have more than enough low end, some would say lightswitchish . If that's what makes you run faster lap times then so be it , I prefer an engine that will no create too much wheelspin and has "useable" power .
Happy motorin',
Monty
And don't forget how important pipesets are on these cute little engines