Please look this over carefully and  if you
see any mistakes please let me know.

Paul Lamar
Hello Paul, Tracy and Mark,
4000-series CMOS IC's are very vulnerable to static electricity.
I suggest that you must ensure that there are safeguards in place to
prevent the IC from getting "zapped" during load dumps or other electrical
system events.

It would be much preferable to use mil-spec components, such as a  54HCU04.
 This is a high-speed unbuffered TTL-level CMOS hex inverter that  can be
pressed into service as an open-loop amplifier.

The INPUTS to any unused inverters must be connected to either Vdd or
GND/Vss to prevent high-frequency oscillations/instability.

The schematic does not have any protection for the input to the gate.   I
suggest 1k to 10k Ohms.
There are no clamping diodes.  These are a must.  1N914/1N4148  diodes
would be sufficient; one from the Vdd rail to the input (cathode to Vdd)  and
one from the input to GND/Vss (anode to GND/Vss).

There is some overshoot on the 'scope display.  This is due to the
inductance of the wiring not being damped with resistors in the signal  path.
Low-value resistors (say, 47 or 51 Ohms) at the input to the next  stage will
help a great deal to eliminate the overshoot.

Regards,
Steve in Orlando

I'll turn over all the PC board design work to you Steve if you want it.
Here is the latest schematic and board design.

Paul Lamar