Problems in the first rel of VCIIIDIG chip and logic for 018x key reader as follows Remove 74ls123 chips between the 74ls193 counter the problem is at these chips will sometime retrigger giving bad delay and burst counts. update wire list: from u5 pin 13 to u7 pin 4 from u1 pin 13 to u3 pin 3 from u3 pin 13 to u4 pin 4 New delay and burst counts as follows 0F8 for delay counts 05 for burst counts Sorry if this caused you a problem it came accross this problem when trying to read an 018e box.