Are the probe ports that you sell as an option on a new cooker and as a retrofit for cookers that are already in use made special for Yoder Smokers or are they just a stainless steel cable gland?
The probe port is not specific to Yoder. Not sure what the specification is for the part, but there are different sizes depending on the cookers.
The best place to look is on ATBBQ.COM, and search for Yoder probe port. The install instructions are under the service documents area, and specify drilling a 5/8" hole.
Here are the install instructions: viewtopic.php?f=62&t=361
Here is the ATBBQ.com link: http://www.atbbq.com/store/nsearch?sear ... mit=Search