Unable to mount MSSM into the F or G position May 25, 2023 11:23:11 GMT -6 seawolf likes this Quote Select PostDeselect PostLink to PostBack to Top Post by Enderminion on May 25, 2023 11:23:11 GMT -6 Despite F and G positions being open, MSSM cannont be mounted in F and G as seen in the right image adding MSSM launchers (as opposed to the left image adding HSSM launchers).