After I uninstalled the 4" extension from Ole Blue, I put everything back together, but the rear wheels won't spin freely like it does on my drag bike. I thought I put everything back together correctly. I put the correct oil back in. Now, I haven't taken it out yet cuz I'm waiting on handle bars, but shouldn't they spin freely w/o the brake cables hooked up? Could it be that I just need to ride it to get the oil circulated in there again. Do you think I've missed something when I put it all back together? Really not looking forward to taking it apart again.