there is a adjustment screw on the box for the "worm" part of the gear. Screw driver slotted and a nut. It wont offer alot but some. I;d also say that check the lube in it. You can go to 90-130 wt and it helps alco if you already dont have it in there.
You can send them off for rebuild, but costs as much as a new one
You can send them off for rebuild, but costs as much as a new one