I have a Flyzone http://www.hobbico.com/airplanes/hcaa2500.html 3' Piper Cub that I can't seem to get going very well. I've only tried it 3-4 times and have now converted to BL power.

Here's what I realised today it is doing:

It will fly all day if you are not aggressive with the elevator. It trimmed out well and was overpowered , but flew very well until the elevator is pulled back more than about half way. It doesn't have a lot of throw or speed from the stock servo. When the elevator is pulled to full it rolls right very sharply. It is very consistent.

Fly all over the place , but yank back on the stick and it'll roll right very quickly , maybe more quickly than when using full ailerons. I tried to see if the ailerons or rudder were moving while flying , but I had to keep it too far away to avoid crashing.

I know on the bench without the motor running it doesn't do anything funny when puling the right stick back all the way. I also now know that it did this with the stock brushed motor too.

I'm using a 9x Turnigy TX that I use on many models. I'm also using the HK or Flysky 6 channel RX (same type I use in many models) I haven't changed any servos or RX yet.

Some ideas I had that I don't think are the problem:

I'm pulling the stick over when I'm pulling it back.
The ailerons are moving when stick is pulled back all way.
The RX is sending signal to ch 1 by mistake.
The elevator isn't the strongest thing I've seen and does flex just a bit , compared to many of my models is normal. I have tried 2 different ones , servo horn is on the bottom left.

Any common ideas to check out? Thanks.