1. I don`t need to know full problem. I took only small part of it.
2. I told about my problems(see a/, b/ ....) and asked to help if who can do it.
3. I told that my problems almost close to problem of Scubyfan, wich he will to have w/prop (see a/, b/...)
It is all.

4. Project RC fly platfom (RC FP), as far i know, wasn`t made in during last 5-6 years. Next step working out and use profile ducted.
That making right now in field RC ducted fun is PARODY on it. Correct ducted gives +45-48 % Plus of THRUST.