I recently bought this picolo w/separates from ebay. It has the following mods:

-Orion Coreless Elite Mod (8T Pinion)
-CSM HLG 200 Heading Hold Gyro
-GWS 6 Channel Rx (Futaba)
-Eflight 10A ESC for Main Motor
-ICS 50 For Tail Motor
-Brass Tail Boom (Custom Mod)
- Ball In Swash Mod Aluminum Hub Cut Blades

Problem #1
When I hit the throttle, I get no response until about half way, then the blades spin super fast (almost at full throttle speed) Because of this I don't think that I will be able to hover since the heli immediately takes off towards my shins before I cut the power.
Is this happening because of main ESC is 10A? or is it because the motor is too powerful? Please help me with this because my heli has either full on or full off.

Problem #2
I originally thought that the tail motor was dead because I didn't get any response from it either. After playing with the controller, I noticed that I had to hold the stick full left for a few seconds so the tail ESC could initialize.
My question is: Is it possible to get the tail to initialize without having to hold the stick to the left when I turn the heli on?