Acrylic Opinions

I changed my lower/bottom triple facial laydown acrylics about a year ago. They are very thick and have no scratches or spider cracks at all still.

I have been having a problem with the acrylics getting too hot. Usually when I see signs of visible wear on the acrylics it is at the same time as they begin to hold the heat and I change them. I'm confused this time because the acrylics look brand new still. Do you think they are needing to be changed?

I'm thinking about changing the top acrylic as well. I don't change these as often but I am wondering if this could be contributing to the heat on the lower acrylics.

Any input? Or acrylic company recommendations? I normally use LOOP.

Thanks!