So I got this all finally installed and working after making numerous setup errors

Man I'm such a newb, I thought I had the setup stuff down. Anyway the cyclic feels fine but the tail really sucks. It kinda wanders like its drunk. If I turn the gyro gain up any more I get wag. I tried the smaller tail blades and that seemed to help but I would also just blow the tail out. I tried the pre-torque compensation also, I dont know what that does but it didnt seem to help. I just cant seem to get the tail to lock in and not occasionally drift.
I'm also kinda learning parts for this thing are just as much as a 450 size helicopter. So other than requiring a smaller flying area their seems to be no benifit of the 250.