it sounds like to me that you are just having trouble adjusting to a new stick. You said the old stick was stiff, and the new one isn't. Picture this as a baseball player praticing with a heavy bat, then switching to the lighter bat to hit, getting quicker wrist movement, and faster bat speed. Your most likley running into the same thing. What use to be a small smooth input with yuor old stick is now a quicker "stab" input, and at slow speeds will really throw ya for a loop.
Set the sliders like you did for your old stick, then like Ghost said slide the first 3 or 4 down so they step up slowly. This should give ya that "slower input. you were getting with the other stick.
I have all CH stuff, and don't have any trouble with stalls... unless I push the envelope just that little too much
Knowing you have to be a bit easier on the stick should help too.