Awesome! Yeah the air hole is a bit big for my liking. Any ideas as to how to make it smaller? I'd rather not buy a brand new RSST.
I bought a used RSST with an air hole that was too big. Xobeloot gave me a great idea that worked perfectly.
HVAC tape over the air hole. Then, a pin, drill bit, needle, etc, through the tape into the air hole and you can then make it any size you want.