cstevec. Just use the stock mount. That's what I did and it seems to be holding up fine. Even with 4 holes in it. I think it's gonna be fine.

fasterthanlife. I had a F90. It's the one plane that I really hated. The Showtime is lightyears better than the F90. If you are comparing the two, the ST will fly much more stabily, KE way better, and flat spin better just to name a few things. I think the ST is more stable in the harrier as well but I can't do them the best anyways. But the best part of the ST is it actually weighs what they say it will and you can land it. The F90 is weak everywhere and is the hardest landing plane made.
Thanks
Barry