Hate to say it, but after many agonizing hours of tech support, I resolved my problem by reinstalling Tiger. I have seen the message since, but any conflict is now quickly resolved via hot sync manager. make sure you have the pda bluetooth selected, if your using the cradle select usb and palmsync as well. All three are checked on mine and my TX syncs perfectly now with both bluetooth and the cradle. Even the iSync program falls right in line.
After spending so many hours working on this it is my understanding that there shouldn't be a problem with the amount of BT devices.
Hopefully it's a settings problem. I wiped my drive with a erase and install, updated back to 10.4.3, paired the devices via bluetooth, reinstalled palm os, disabled hot sync, changed the connection settings, enabled hot sync, set hotsync settings via my TX, performed a cradle hot sync first (to make sure all programming had been updated) , and then dared to try a bluetooth hotsync. Happily it worked, and has been running like it should ever since. After that I set up the device via iSync (enable os device) and that works great too.