hi guys my friend bought a redcat shockwave, and we broke it in with 20% nitro, and we went to the LHS and he bought 30% and now we have to run it on that and its really slugish, should we just buy some more 20% and tune it to that, becuase it seems like it just cant handle that percent of fuel, and we got a guy to tune it to its max performance and its sstill really slugish

With 30% nitro you need to be running a #5 glow plug.

OS PLUGS

OSMG6300- #0 Economy standard plug similar to the O.S. #8.
OSMG6304- #1 Hot plug for low nitro (0-5%).
OSMG6308- #3 Medium plug for medium nitro (5-25%).
OSMG6312- #5 Cold plug for high nitro (25% +).
OSMG6316- #7 2 stroke engines requiring an idle bar.
OSMG2691- #8 "The" standard. For use in all 2 strokes, any nitro.
OSMG6320- #9 For general use in 2 stroke engines.
OSMG2692- #F For O.S and other four strokes.

if its sluggish its not tuned correctly, may need to be leaned out or something or its too lean and running hot, here's a couple of video's to watch

1. http://youtube.com/watch?v=oSmMzpZM_As

2. http://youtube.com/watch?v=BJFsJAxNoRg

ok #5 plug, thanks hes using the stock plug

i see your in canada, if its cold a #5 may be too cold but try it.