I finally got the chorus to work, but not the 555/4013 circuit. I think I have bad 4013 chips. I used a 40476 circuit and used the below website to come up with the R1, R2, and C1 values for a 23KHZ output to the MN3007. I see for JTEX Rockman engine he used a TC4S584F Schmitt trigger in place...