@ghdprentice I had terrible sound variation due to A/C going on, both mine and all my neighbors on our transformer, it seemed. I fixed it by using a PS Audio P-20 regenerator, and from what you describe, this might work for you, too. Sounds great all day and night.
What’s your obstacles on the way of listening
Summer time is coming, birds are going crazy, saws and grass cutters are buzzing, hummers are knocking, leaves are rustle... what else is on the way of your listening? ... my best season of listening is Christmas time and fallowing couple of months. Looks like Arctic Circle geographically the best place for critical listening:)... lucky Alaskans and North Canadians :)