Picked up a 1997 Cobra 42 (21T) to go along with my Cobra 51 I bought new in 2001 (21iT).
The 21T control is stopping at M1 when op. stop is on. But when pressing cycle start to continue the machine sometimes starts fully and continues and sometimes only the spindle starts and requires another press of cycle start to proceed. This is a long running Proven program that was brought over from the 51. Other than this oddity the machine runs this job great. Has anyone experienced this double press cycle start after M1 before?

Thanks!