Dave,
You need to create a curve for each channel.
Assuming sequence of open door- retract gear - close door. : the curve for the door socket is like an inverted glass of water. Start at 0%t, then go up, remain there for a while, then go back down. The retract socket curve has to reach 100% when the door is open (at the same time you are 100% in in the inverted glass, which is about halfway). then it remains at 100%.

If your sequence is open door- retract gear (doors remain open) then the curve for the doors is only half ot the previous (it does not return to flat after being at 100%)

You need to be able to slow down the channel in the Tx to about 5-6 seconds for this to work.

Good luck