hey monty, I ran my plus 4 in the truggy las week n it ran decent. very smooth motor. I don't think its hit its stride yet so imma try n get as many tanks thru it in practice this weekend cuz i'd like to see what type of times i can run with it at full peak power knowin i was only a few secs off my regular times with it runnin pretty rich. now i ran it wit the 9853/41021, do u think i should switch to the 41005? i haven't tried it yet.