Hello - first, apologies if this has been covered, and thanks in advance for pointers to any threads I've missed. Three questions related to my VC Winterwarm (small) catalytic insert: 1) what temperature should the stove reach before engaging the cat? 2) what is the max operating temp for the stove? 3) I recently obtained an infrared thermometer - where would be a good place to take readings? The top plate on the outside? Or, inside the stove on the iron side wall? (my temp gun goes to 950-degrees F) Thank you!