Does anyone know if the rubber seal is still needed when replacing the shift lever seat with a marlin after market one. I tore my truck apart and the old seat was gone I cleaned it all up and put in the new marlin seat without the seal, it helped a bit and the truck does not pop out of first as much but still does sometimes. I tried to re-install the marlin seat with the old seal in place and could not get the cap to twist on. Do I just need to try harder or is the after market seat not designed to use a seal?