What did you get and what / how (much) did he say you needed to modify?
I haven't modified a cabinet, but I am the engineer for a medium sized brewery. Temperature control is something that is only mildly important to us....
I've got a lager brewing in my dedicated fermentation fridge with an Inkbird controller keeping it between 54F-55F. So as a fan of both brewing and dry humor I got a good laugh out of that .
__________________ A 1911 in the hand is faster than 911 on the phone