Originally Posted by
b20btec
I'm not sure if you know or not but you can run a yokomo gear diff. You will need to shim it. Not knocking on the photon diff but it runs fluid like a two year old with a runny nose.
I read back a page or two and realize that you like ball diffs. You should give gear diffs another shot if you haven't already and adjust accordingly. You're running asphalt with low traction you can go lighter oil. I also don't use top springs, I use the Rides haras and pro match on carpet and asphalt. I own a ex and standard photons that I run locally once in awhile for tc and usgt class.
Just to make sure, I have the Photon not the EX. If you have a part number and place to get it I will try it. I purchased the EX and it will not work. Not that I can figure it out.