X1/9 oil pan should be aluminum. They should be used with the "paper" gasket material. The "rubberized cork" gasket is for sheetmetal oil pans with pockets in the sheetmetal for the rubberized cork material to seat into. Both gasket materials work, but for a stock x1/9 aluminum oil pan the "paper" works better as it does not compress and settle in the same way as the rubber-cork gasket. What is important, flatness of the sealing surfaces. There are two aluminum seal carrier plates at the front and back of the cast iron block that have a gasket between the plate and block. Common to have some of that gasket to protrude into the oil pan sealing area, trim that off with a razor blade if there is protrusion. Do apply gasket sealing aid Hylomar is a good choice for "paper" gasket. For rubberized cork, no gasket sealing aid as that stuff is designed to absorb oil, expand to aid sealing. As for torque on M6 screws, grade 8.8 is typically 11 to 12 Nm with light oil. This could be a bit much for a rubberized-cork gasket as they compress more than paper. There is a tendency for rubberized-cork gaskets to compress removing tension from the oil pan screws causing them to fall out and there is can be a re-torque cycle to compensate for gasket compression.
Oil pump screws are M8, grade 8.8. Torque should be about 24Nm lightly oiled. That torque spec of (83Nm) is too much, assured to twist off the M8 cap screw.
Bernice