The 2250 was sold for sure, instructions were produced for it also.
Not sure about the 2650.
I believe Gary's drawings were based upon recollection of the originals, but not positive of that.

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When in doubt, WHACK the GAS and DITCH the brake !!!

Yes, there is such a thing as NORMAL, if you have to ask what is "NORMAL" , you probably aren't !
Failure may not be an OPTION, but it is ALWAYS a POSSIBILITY.
ALL systems are GO for MAYHEM, CHAOS, and HAVOC !