OK so I know that the low end needle is for roughly 0-50% throttle and clockwise is leaner and couter clockwise is richer so will adjusting the low end improve acceleration? If so should I wait till I get my new Nitro Racing clutch(its on it's way) to tune it? Also I was advised not to tune it by my LHS because I am new to Nitro RC so can I tune it safely and if I need to, how could I reset the factory settings?

I Have a Nitro RS4 3 Type SS and it is a little sluggish

Send me your email address and i'll send you a good doc on how to tune your engine. its very straight forward as long as you know whats happening inside the engine and what the noises mean

Cheers

Send the doc to me too. Thanks.

[email protected]

TTT

Or you can goto the bible of tuning nitro engines:

www.parisracing.com

Its pretty informative and this is what I used when I got into tuning nitro engines. Hope this helps.