On a fairly well trimmed Blade CP (LHS) - I just got a 20A Titan ESC and a HDX Brushless from ebay, with powerzone board. While flying it seems very jerky and wants to fly into the ground even when it's lifting off the ground kinda up down up down, then up, up, up, then down hard about a foot. Idle up is not on just regular mode. Blades seem to be fine as mid stick in idle is is looking pretty flat. It almost looks like the servo wires are getting interference and lowering, kinda my best guess at this point.

As far as I can tell nothing seems wrong. Let me tell you HOLY COW the brushless will mess you up if you are a newbie. I think I have too high a pinion T count for the blade CP and will probably down grade this when I get a chance to hit the LHS.