I had my DESS disabled and bought 2 spare Ilco x270 keys. Had them cut, but never attempted to use them. Fortunately, this posting made me check my keys with the Spyder, before I forget once again. One thing I had forgotten was to grind the corners (as was shown in the previous picture) to allow for the little inward push clearance needed for the Ignition, everything else (rear trunk , frunk, seat latch) was good to go.
After grinding, tried the keys, started the Spyder right up.


That deserves 2 thumbs up.
Thanks for this key posting. Was a definite reminder for myself.