Official US Navy word regarding specifically the OAR is, candidates have the option of doing paper or CAT for math, reading, and mechanical. Times for both versions are the same (40/30/15, respectively), no maximum number of questions for the CAT (which makes sense), the paper version has 30/20/30 questions, respectively. And I totally see the need for a joystick for the rest of the ASTB-E, but I'm only focused on the OAR portion. Thanks to all who helped me sort this issue.