I have the 732 and the signal is much stronger than the 73. I still need to modify my WSM so I can get both probes to fit between the grates. I did install the CB grommet, but it is too small for the. 732 probes. Getting the 73 probes through it is doable, but takes some fiddling to get it to work. I have seen a mod using a lamp nipple on the tvwbb.