I have a builder-grade framed shower enclosure that is leaking water near bottom drywall and baseboard. Shower is 14 years old. I recalked suspected area on and around shower door and frames with clear silicone and then after drying 3 days water tested area and it did not leak. I thought I I fixed the issue because I took a shower and it did not leak but once both myself and my wife took separate showers it started leaking again. I think it has something to do with something being clogged up and length of shower time. I have researched that weep holes could be clogged up but I'm not sure if I have weep holes in the drain see attached pictures. I have an old Oatley Caspers drain with black rubber gasket on top but no weep holes I'm wondering if weep holes are up under black gasket but I'm afraid to lift it and damage it.Any suggestions?