Just tested the OTC mod and have to tell you that the changes ou made to the radars are great, now I finally can use them and switched from playing in map-update mod to full realism. What a change!
I also like the periscope changes, very nice!
The radar fix files for the Balao (iirc) are missing, though, no problem I made the changes there myself by looking what you did in the other files, but i just wanted to mention it. Oh and your mod documentation is impressive and as good as it gets, all changes listed as far as posible, now that's some real community thinking!