Dolly is supposed to be dropped at a certain alt anyway.
Otherwise it would tend to (not in game however), bounce back up into the Komet and cause.....er.. "problems"
I haven't flown one for about a week, so I didn't notice this.
Also, the skid needed to be "decompressed" before landing so it was more spongy. More than one Komet pilot has received a broken back for neglecting this small issue because the landing was too hard. I wish this was modeled somehow..