There was a twin-stick GR4 that did a roller landing at Waddington about 5-10 years ago on its CBLS with practice bombs on. Both the pilots (note this was a QFI check) noticed that they were a bit lower than normal and heared a scraping noise - apparently the view of the sparks from the tower were quite impressive!
For some unknown reason they decided to go back and land at Marham having left a few items off the CBLS at Waddington
. I would have thought landing at Waddington would have been a better bet rather than risk bits falling off across half of Lincolnshire and Norfolk, but I guess they had their reasons.
Still, no significant damage to the jet and they lived to tell the tale.
LJ