Bertram65,
It sounds liked your hitch is like My Draw-Tite. There are four holes, two on each side of the frame bolting the bracket that sits on top of the frame, the same dia. you mention. They are only drilled on one side of the frame (outer). This Co. also has a Trailer brake control named Draw/Tite. its a duplicate of the Prodgy. Seems like some of these Co's are merging.
Chuck
It sounds liked your hitch is like My Draw-Tite. There are four holes, two on each side of the frame bolting the bracket that sits on top of the frame, the same dia. you mention. They are only drilled on one side of the frame (outer). This Co. also has a Trailer brake control named Draw/Tite. its a duplicate of the Prodgy. Seems like some of these Co's are merging.
Chuck