I am posting this in various forums, so here goes for here: My AR-XA got it's new-from-Hurst motor installed yesterday. It needs a little coaxing to get it to spin. The belt slips off occasionally, and when it stays on, the pitch is rock-solid. Do I need a new belt? I tried the powder trick. Do I need a new pulley?I guess if I get both, I really can't go wrong. Right? Help?