Remember being asked to fly with mine in theatre in the run up to GW1. Accidentally put hook on helmet through rubber seal when donning. Cancel trial, fly normally, reschedule for 24 hrs (curing time for repair)
Next day, accidentally etc etc. Reschedule. Warn my maintainer he will run out of seals before I become more adept!
Trial cancelled!
(My CO was a v.savvy ex F4 driver who got the picture instantly and accepted my explanation and promise that we would be better off in the old S10 with it's "rubber band mods"!)