Hi, I see this has been asked before but all the links have expired. I am trying to replace 6 locks all with the same key on our 2010 Autotrail 634 (gas, battery and space wheel lockers) to make them more secure by having proper key locks rather than the ones fitted which can be opened with long nose pliers. My present compression locks have a barrel 22mm thread and 19mm across flats and 30mm long. The cap diameter is 28mm, the thread section with the arm on is 10mm thread 35mm long with 8mm across flats. I would like to continue using the existing arms if possible. All the people I have found on the internet don't give dimensions of the lock and are not replying to emails. Has anyone else out there changed all their locks? I have attached some pictures from SnJ previous June 2020 post as mine are the same. Alternatively I see there are barrel replacements for some locks is this possible with this lock.