Noticed a lot of steam out of the rear stack, stuck a thermometer in the water in the small tank and it was 220 f. Could i have a air leak somewhere? Seems to only steam out on windy warm days. Burning some pretty dry wood also.
some "overshooting" of the set temp is quite normal but if you have your stove set for 180 and you are overshooting by 40 degrees then yes i qould say you have an air leak. I am unfamiliar with your stove but i will say some stoves have a gap set in the flapper to allow a little air to get by when it is closed so that the fire does not smother completely.(perhaps this setting is a little to far open for the windy days?)
also a gasket leak at the door may be a culprit?
if it is only on windy days it sounds like a small air leak, have you cleaned your flapper and made sure it is closing properly (at times they have been known to build up with creosete and not work 100%
look closely at both your air flapper and your door. some times you can use one of them incense sticks (them smelly things that the wife likes to burn now and again) they give off a nice small steady stream of smoke, you can hold them close to the areas you want to check and see if that smoke is getting sucked in around a door seal or the flapper.
also if your flapper just closes over the opening of the blower (if you stove is equipped) i have seen on windy days the flapper seals good over the fan's inlet but the wind is strong enough to suck air right through the motor winding, if you try the smoke thing be sure and check around the motor of the fan as well
good luck