yeh, i was gonna mention the 2k or whatever was on the beta tester box was too low - the low levels would be close to 2V and might be on the edge of the acceptable low of ur 4093 IC.
i think i arrived at 6k8 (on the 23710-52f00 ecu i used for testing) as the width of the logic 1 was closest to the proper length (100us or whatever it was) on the output of the HC14.
6k8 gave around 1.2V low which is the min guaranteed threshold for the ST 74HC14 chip im using. might want to bump it up to 8k2(~1.1v) or 10k(1v) if i use a more generic chip (some have lower min thresholds).
posted some osciloscope results here:
http://eccs.hybridka.com/viewtopic.php?t=292