13-08-2017, 09:35 PM
It's a case of trial and error, try slackening the nuts , there should be two , locking nut and the adjusting nut , it is a very fine thread. Might be worth taking them apart to look a their condition. They may be wood or the more modern composite, all parts available from our cue usher suppliers.
I am always interested in any information about Rosengart details or current owners.