Hi all. I have a question. I have been trying to replace my tub for a week now and have been having problems. Mostly from my own lack of experience I suppose. It's a Kohler Elmbrook right drain acrylic tub. The floor under the tub slopes 1/2 inch in four feet measured at the end of a level. I shimmed the left end feet under the tub up 3/8 inch with lauan sheets to level, marked the tub tile ledge on the studs, poured mortar directly on the floor down the middle of where the tub well sits, a whole bag and a half, and sat the tub in the mortar. Everything with the tub and wall framing lines up so plumb and level, just beautiful. Well, a problem I didn't quite foresee is that there is a gap about 1/2 inch at the left end of the apron, sloping back to the right end which is in contact with the slab. There's ceramic tile in front of the tub that hides part of the gap between the floor and apron, but it's still a pretty good gap. Now, I know it's too late to think I'll be able to pull the tub, the mortar has already cured and I forgot the plastic between tub and mortar, so it's there. I may be able to get to about the first foot of the backside of the apron through the stud framing, but there's no way I'll get any further, plus the way it's constructed I doubt I'd be able to shove any mortar in from the backside. I've seen warnings not to shim the apron so I left that alone. Evidently I'm missing something here. Any suggestions?