Only carriages with space to work with tinkering were with lord Balebrook, Cairn, and a couple of other merchants with luxury carriages. All other carriages were filled to the brim with goods and none wants somebody working or tinkering among the goods.<br/><br/>Lord Balebrook naturally would not let you back in, Cairn and a couple of other merchants could let you tinker in the carriage but they would ask for rental money from doing that (their merchants and they see a profit opportunity).