Has anyone had a MSD 75301 that went into Limp-in mode after changing plug wires? What's do you do to fix it, not really sure what I did., Timing stays at 21 degrees all the time.

64 Dodge Coronet 440. In progress
1998. Dodge Avenger. 8.35@165. 4400 DA
250” Neil and Parks Slip Joint. 7.36@183.
4600 DA
242" Mullis Dragster. 6.90@ 200mph