blackhornettechnologies.com/Construct2Stuff/fallingcards_BHT.capx
Don't break up the trigger. Use subevents to check Touching, othewise when Touching=0, you set it to 1, then immediately check on the next event if it is 1 and do that code also.
(I disabled some actions in event 7 as they were getting in the way of showing this fix).