These can be released but its a pain. In the past, I've unbolted them and then slid the locking part sideways to disengage the teeth...
...not that you should hopefully have to do that often ! Nick -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to neonixie-l+unsubscr...@googlegroups.com. To post to this group, send an email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/290f97cc-900d-4cfb-bcb4-517644efb9e8%40googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.