[30Tudor]

I am replacing my oil pan gasket for the third time. I seem to have a recurring leak at the rear of the pan. (Oil is not coming out the flywheel housing cotter pin hole). The last two gaskets I have used are the cork gaskets and I think I have over tightened the bolts and squeezed the gasket out. I just got a new gasket from Synders (see picture) and had a couple of questions:
1. Has anybody had experience with this? It says don’t use gasket sealers. I normally use a light sealer to glue the gasket to the engine side. Also, what about the interface between the rear main cap gasket and the engine flanges?
2. I also have a set of paper gaskets – is that the way to go?
3. Any chance my pan flanges could be warped? – I will check this.
Thanks