Que, you misunderstand the problem. It is not issuing dim commands to the tranceiver outlet that causes problems, but issuing dim commands to another unit on the tranceiver's housecode. After sending a single dim, many of the TM751s will continue to dim the light to off, and then lock up. They will not work until unplugged and plugged in again.
I have seen a fix proposed on these boards, but not with universal success. I returned a defective unit and recieved a working one back from X10.