I have a new 07 450 with stock rims, now I'm having a problem with my tires, 3 outta the 4 have slow leaks and have been to the shop 3 times! I said the hell with this and I Slimed two of the tires and I pumped the PSI to 12 (all tires are at 12 PSI) did I do the right thing? I went riding today...