About 10hrs of riding ago I put new seals and fluid into the forks of my 09 yz450. I inspected the bushings and they were fine with minimal wear. I put 5wt in the inner chamber and 10wt in the outer. Turned out the forks were really stiff and couldn't get the rebound right. So i tore them apart again to try a diff fork oil wt/ level. Once i opened it up all the bushings were worn out. Did i not assemble somthing right? I followed the manual for fluid amounts and re-assembly.