Trying to solve stopping drift with a tighter delay. O-rings degrade, air pressure varies, product weight varies, and the stop position moves over the life of the system no matter how good the day-one delay was. The fix isn't a delay that's only correct when everything's ideal. It's clearance: size the takeaway so the longest carton clears both frames even as the stop position drifts. You design that in from the start, or you change the takeaway geometry later.