If I understand your question...
...here’s a thought. On my airplane I mounted each of the PMags such that access to the anchor screw on the control lead plugs was easily accessible. So each mag is oriented slightly differently as necessary to provide access to the screws.
Jeffrey T Jones
RV-14 N588TJ Completed
First Flight July 10, 2018
Flight testing completed August 14, 2018
2020 VAF dues paid plus beer money😜