I just replaced the bushings where the pin goes in on my tops. Rattle gone.............. While doing so I discovered that the rear bushing assembly is adjustable. Loosen the screws slightly, not too much, (as the plate will fall down) then pull down on the assembly and re-tighten. If this doesn't help then you may want to order new bushings and replace the worn ones.
The tongues on the t-tops can be shimmed. If you take a closer look at where they screw in to the top you'll probably notice some shims already in place.....these are mainly for adjusting the height, but can help in reducing rattle. If you have a rattle at the outside, the adjustment is made to the black bumper on the clamps. You'll be surprised to know that sometimes if they are to tight they'll rattle. So, adjust either way to relieve the rattle.