Are you running 12 gram sliders still? May need to go down to 11g or mix 12g and 11g. My 155cc buggy with the A12 has lots of high rpm power but when I put the 10.5/12.5 rollers in my motorio dr2 it wouldn't climb very good. With the 9/10.5g combo it would spin the tires good and rev all the time but lacked acceleration. So now I am running 9/12.5g and it works but still a lot of rpm at cruise. Might be to much of a weight spread.
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