Ok guys I've been a carpenter for years and never had to deal with one of these 4 piece showers. The guy that put it in the first time used regular silicone to seal the panels and it's been less than a year since it was put in and all the Ali one is peeling off of it. I've got to take the shower out and move it to another bathroom. My question is what is the best sealant to use on it other than regular silicone cause it don't work? Thanks!