I am trying to put a Reece class II hitch on my 98 Jeep Grand Cherokee Laredo. I removed the towing hook, and put the bar on the frame. The directions say to make sure the hitch is centered and put the bolts through. I did that, but it still slides back and forth a few inches. I haven't torqued the bolts yet, but I'm thinking that because there are slots instead of holes in the bar, it will always slide a little. Is this normal?? Also I bought the wiring harness, and there were two to choose from, one had a connection for a battery (like on a travel trailer) and the other didn't. I chose the cheaper one, with the battery connection. Is that connection going to cause a problem? (I had to order it, so I couldn't try it on)<br />Any advice is much appreciated. I want to put the boat in the river tomorrow for the first time.