I am remodeling an old shower. thinking about the pan and slope. Stall is 6'6" long, by 33" wide, the drain is 26" from the front of the shower, and a little offset. Idea is to have a shower that does not have a door, just a partition glass that you step up, and walk around and into the shower area. However, if I take the 1/4"/foot drop from the farthest distance from the drain, that means my side slopes from the drain will be very steep, outside the 1/2" per foot max. Any ideas on how to build this pan? Could I have a short flat section, before actual slope starts? Thanks