Try increasing the gain on the T/R mix pot on the esc it is in the same place as the gyro gain.This might give you more control on the pitch and roll adjustments on the rx and should help in trimming out the heli.You picked the hardest heli to try and learn with not only is it small but it has no weight to speak of which makes it harder to control.What I would suggest is stop playing around with those little fixed pitch heli's and get a good 30 or 50 size nitro to learn on it is much more stable and has much more weight so it is easy to control and to learn with.I tried fixed pitch for about a week and got rid of it and went to collective pitch but I would not even say to follow what I did because instead of going right to nitro I spent time on electrics and wasted time learning those when it would have been better spent with nitro.
I would say either a Thunder Tiger Raptor or a Hirobo Sceadu Evo or if you really want a good heli a Hirobo Freya that is what I have the SST-Eagle Freya 60 now a 60 might be a little more than you want to tackle right now but it is a great bird.Although I would suggest forget a 30 size and start at a 50 size because you will grow out of the 30 and want more and starting with a 50 is best.Now remember that you also will need a better radio to go with this heli the one you have will not cut it.I would ask around where you live and see what every one else is flying and see if you can get some help from experienced pilots look here to see if some one is close and e-mail them and ask advise from them check here http://www.geocities.com/cj_higdon/locator/connecti.htm
Well I will let you mull over what I said and think hard about it because it is a big investment,if I can be of further help let me know.