I just started racing off road on a local indoor pure red clay hard packed track. I am having traction problems,I am running JCONCEPT Barcodes Green soft compound. Every one else is running Barcodes and doing fine. Yet I still have traction probs. Slipper adjustment does not help,shouls I use another spur pinion combination other than 86/19? I am running Castle Side winder and 7.4 30c lipos, any help would be great. THANK YOU BTW My Slash is 2wd.