So I'm just about done converting my Thundercat to 136". After assembling the skid, I measured the distance from the center of the mounting holes in the rear and front arms, then relocated the brackets in the tunnel so the distance would be the same. Now the rear arm is about a half or 3/4 of an inch farther back than where I put the hole in the tunnel. Will I be causing any long term damage if I bring that arm forward enough (like with a ratchet strap) so I can get the bolts in? Or, one of the holes below the tunnel will line up fine, but I'd have to drill the rest of the hole out. Cat's tech book says if you have to go below the tunnel, to only use the hole they've already drilled out. Does anyone know why they don't want us to use one of the other holes?