Hi All -

Darkwombat - thanks for your PM's saved that info for future mods.

I've managed to make my heli unable to lift off after performing repairs. Here's what happened -
I flew a couple of successful and not so successful hovering and ff flights Friday after work. Got home and noticed that one landing gear strut was broke, further inspection revealed a bent main shaft and blades a bit dinged. That night I picked up carbon blades, and the aero upgrade kit. Today I replaced the main shaft, installed the new carbon sym. blades, 9t motor, and heatsinks. First test hover and the heli will barely lift off and wants to fly right. Reinspected installation of parts and tested flight controls, it was then that I noticed the right aileron servo kind of lagging - with the servo link disconnected and battery unplugged the servo is very difficult to move and sounds like rocks are being crushed. Ok - so bad servo, called all the local HS and unable to find an eflite servo replacement. I picked up a hitec HS-55 servo which plugs right into the 4-1. I thought that this would work fine, so I powered up the heli and it seems better but still won't lift off even at 80% throttle. Again, I disconect main / tail motors and ran thru the preflight check - seems like there's no blade pitch movement when throttle is moved up. Swash plate moves freely in all directions, so I suspect 2 or 3 probable causes -

1) The hitec servo is incompatible?

2) The 4-1 was damaged in last crash?

3) I screwed up something during install?

Here are the servo observations during control movement

Throttle up - left aileron servo moves down, right aileron servo moves up, elevator servo moves down

Left aileron input - both aileron servos move down, elevator servo moves up

Right aileron input - both aileron servos move up

Forward pitch input - elevator servo moves down, left aileron servo moves up, right aileron moves down

Back pitch input - opposite from above.

According to the manual - my controls are all messed up.

I'm at a loss right now, hopefully one of you can help....TIA