[UK-CONTEST] HiGain Traps

[Bob G3PJT]

Hi
As this reflector is most likely to have folks who have had to dismantle 
Hi Gain traps I hope you will excuse this off topic post..
Question is how did you get them apart?
  Did you have to drill out what appears to be some locking dimples 
which stop you sliding off the outer sleeve once you have removed the screw.

Its the nice weather here in Cambridge - time to get out and fix those 
antennas.

73 and thanks for any help

Bob G3PJT