Kickdown issue
OP - how many rods in your kickdown system?
The thing that really has me puzzled is that everyone is giving you solutions to make sure that the lever on the trans is all the way back at WOT, but you are already achieving that, right? I agree with you - the issue isn't in the linkage. If the length of the trans lever was the issue you wouldn't be pushing it all the way open. You are judging the lever being all the way back with the linkage disconnected, right?