Gutted! Been working on this since the patch was released but as previously mentioned above, the custom zoom button of your choice will work on the 2 modes where it is not necessarily needed (due to being able to target & padlock) but on the mode where it would be near crucial (Sim), it doesn't work.
Where the pad is concerned, this is a huge blow. The nearest you will get to being able to enjoy the freedom of looking around via the Right Stick without clicking R3, & have the zoom in Sim mode; is default layout 3 but the zoom being on the square button is extremely hard to use when viewing & flying at the same time.
A work around would be to have the zoom on the L3 click button but for some reason, this (or any other assigned button) doesn't work for Sim custom maps.
Really hope this can be solved!!!