From running my G400, if your weather is mild enough that it’s going into the 3 minute purge mode then you will get more creosote as it’s not under enough load to run enough to stay dry. A long as the door latch “snaps” shut I’m not sure tightening anything will help much/
These stoves are very efficient and that in itself has a drawback, they burn very little wood but at the same time this can be a hindrance as they can idle for long periods of time and don’t build enough heat to keep them dried out.
I’m heating a 2700 Sqft 1800’s farm house and a 45x50 shop that used to be a cow barn. Not even a moisture barrier under the cement, no perimeter insulation around the cement and the only insulation is single bubble on the walls and double bubble radiant barrier on the ceiling. It’s just plain frigid tonight and the stove just did a three minute purge cycle. But, we drop the temps in the house down to 67 at night so the house hasn’t been calling for heat for awhile now and the shop is turned down to 40 at night just to keep the lathe and Bridgeport warm to prevent condensation.