i went ahead and did the 5k rear, but i put the 30k in the center.

the hobby shop reasoning behind it is that with the thinner oil up front you end up spinning the front faster then they would like. the front spinning faster in the front wont allow you to get around turns as fast like if you have thicker in there.

the 30k in the center made me wonder, but the shop i got to is a like 60% buggies 25% mts and the rest on-road and st's so buggies are their main business.