This model is simply a faster flying model -compared to the VAPOR
Your problems are in basic setup for THIS type model -
By reducing throws to aprox 50% and adding aboout 35% expo it will be much easier to fly- However you need aprox 50 ft by 50ft airspace to get aquainted with how it flies
If all yo uwant to do is hover and turn fast - MUCH less space is needed but to cruise around - yo will use at least the space I noted
No amount of airfoil reshaping will cure your problem - Loosing 10 grams would make a huge difference - but you simply can not remove that much weight!