Kickdown with transgo tf3

While we are on the topic I would recommend care be taken with the TF3. Mine was set up 100% as per the instructions and while in park, if you brought the revs up to 3500 or so it would jump the park sprag and launch. I suffered a crushed femur because of this. I have heard of a similar occurrence in at least one other car that launched through a garage wall. Mine stopped doing this with some linkage adjustment, but I still don't trust these kits.

Does anyone else have any other similar experiences?