In reading through instalation instructions ('m looking to buy a HT), it seems the first thing you need to do is to measure the length from the windshield to the back lip of the tub/tailgate area. I think for my '02 TJ, the measurement is suppposed to be 75 1/8", I think -- on both sides. That's standard across all tops I believe. But, if not correct, you can loosen the windshield and move it until both left/right sides are the proper measurement, then re-tighten and install your top. Could be -- just a guess -- that your left side windshield needs to be adjusted. If not exact, your top may not seat properly. Again, just something to look at. Good luck!