needing help w thermometors and adhesives

[dizzyBBQ18]

I have an offset smoker and the only one I have is centered on the cooking chamber lid.
should I add another one by the entrance of the fire box and cook chamber and add one in the center of the fire box lid?
I usually am pretty good with keeping the temp good w just the one but am just wondering if anymore is necessary? What's a good place if I need to get another?
I'm looking to but the food grade food grade rtf for the fire box but not sure it'll be ok w a temp max of 650.
Ill probably get the food safe gasket for the cook chamber and that is maxed out at 500f w adhesive that should be ok.
I'm paranoid on the safety of these adhesives.
I'd use the 650f adhesive for all around the smoker cover the Galesburg like I said for the fire box I probably can't huh?. Thanks

 

[dizzyBBQ18]

http://bbqgaskets.com/catalog_5.html
http://bbqgaskets.com/catalog_10.html
should I really worry about getting a higher temp and not being food safe adhesive for the fire chamber or shallots 650 food one be fine?
Again thanks for the help

 

[Bludawg]

JM2C you only need 1 Accurate thermometer on your pit and it should be registering the grate temp. I'M not a RTV & gasket type I have a Welder.

 

[dizzyBBQ18]

So your suggesting for me to get a grate thermometer?