I got an SR5 gauge cluster for my 91 22re pickup. I had to dismantle it a little to change the mileage and to clean it, so I was wondering if it matters where you position the Tachometer needle. If you don't put it on right it won't settle on the little pin at 0. Also if it is set wrong it'll drop down to 6 o'clock after the 5000 or 6000 rpm mark. Do I need to find the magic spot to position the needle, or will it take care of itself when it has power from the trucks electrical?