Shooting these 1 7/8" thick rails on these massive panels was a bit of a wrestling match, but do-able. only just.
What the f.... Looks like a micro remnant of a staple or something buried on this one rail. did not see that. Gave my Lie Nielson jack a thorough rogering. of course this means it also went through my machines.
Perhaps you can make out the offending piece of debris.
All panels finally through soap finishing, ready for install. After Glue-ups begin, these things quickly become an overall logistical back breaker. The laminated panels are 3/4" thick. These suckers were surprisingly heavy. Absolute deadweights.