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That is a different setup than what is on my 2018. I have a tapped hole in the valve cover casting. Looks like yours is an insert that may be replaceable or try a longer bolt/screw. The thread size is 6m-1.0 and about 15mm(5/8") deep on mine. I made up a "wing" bolt so I didn't need any tools to take the cover off.

 

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Kind of interesting my Trailhawk does not even have that. My cover is held down with the plastic male ends going into the rubber gourmets. No screws or anyplace to even put a screw. Must have added this sometime after mine was built.

My 2018 has 1 bolt and 3 rubber grommets holding the cover on.