Being new to this and trying to learn to fly on my own I have an annoying problem with my XP electrafun.

When turning it drops it nose and will go into a dive unless its turned really slow.

I have already moved the push rods for both the rudder and elevator to the most outside holes to reduce movement so I don’t over control it.

Looking at the rudder it slopes back at a fair angle, I cant help thinking that this angle is giving the tail end some lift as it turns.

Would cutting the tail fin so the rudder section is more upright, would this reduce this effect?

What other effects would this have?