Hi, this is a follow on to another post about low oil pressure on an otherwise good running Massey F40 with a z134 engine. The oil pump, which may have been original and untouched, had no gasket on the side plate that covers the two oil pump gears. The Tisco oil pump repair kit I just received does have a gasket. The side plate seems to be very tight fitting and I cant imagine much oil escaping, but it does leave the question as to which is right, gasket or no gasket on the side plate. Presumably placing the gasket on there could create some clearance that should not be there, so i am a bit lost. Any help appreciated.