Primed oil door and part of lower cowl with Evercoat slick sand, sandable primer. Torqued oil temp sensor. Lycoming says finger tight and then 135 degrees more. Didn't seem like enough, but stopped and torque sealed. Drilled hole in aft baffle to 11/16” and installed mag cooling duct. Sealed with high temp RTV. Sanded oil door with 320 grit then 400. Felt like I sanded off most of the primer, but we'll see.