I am getting close to being finished with my 912UL in a IV-1200. My question.... Has anyone with a SMOOTH COWL installed an oil check access hatch with the oil tank installed as described in the 912 install manual (cradled in the firewall)?

Did you offset the hatch or place it on the center line? What size opening did you make? Can you post a couple photos?

Thank you in advance. I prefer not to re-invent things!