My mt45 has a light that is constant on. It is nice because in the dark with lid closed it is easy to spot any gaps. I am curious if others have done this test and what the results are ? My lid needed some very slight adjust and I recheck it alot, cause the lights on and its a quick glance, however my less expensive back up Aspenora fridge has a plastic molded lid which likes to warp if it gets warm and wont seal, I was thinking of making a better gasket with foam tape, anyone had to do that ?