90 oil filter housing- replacing sensors and gasket - any loctite or RTV needed?

[Corvette95]

I just took the oil filter housing off my 90, I am replacing all the sensors on the housing and installing a new gasket. The sensor all have the factory thread seal on them, is there any hands on advice for supplementing the OE thread sealant on the sensors with a specific loctite or other? Also, is the gasket just contact or should I put any RTV or spray adhesive on it? I am trying to do this once and done so I want to stop any leaks for the future. ALSO, is did tighten the oil pressure regulating valve cover, it was not super loose, but took 1-2 full turns to get tight. I didn't replace the 8mm with 10mm only due to the virus as I can't get out to the stores. Quick advice on the loctite and RTV would be appreciated as it is going back on this morning. THX!