Tony, welcome to the group. I use that set up and IMHO, the best thing to do is call Maverick and order the longer version of the temp probe. This will allow youw to drop it thru the top vent opening and secure it to the cooking grate all the while being able to remove the hood without having to disconnect the probe. If on the other hand you don't want to temp from the grate, you don't need the longer probe and can just drop the temp probe in the vent opening and clip it to the vent tab. You really don't NEED any other mods for the Maverick.
Good luck with the new cooker.
Mark