I have a set of Thule 727 ski + snowboard racks that I no longer need. They are in near perfect conditioning have the keys with them. The discolouration on the rubber just seem to be surface clouding. The rubber hasn't perished at all. They are designed for a 'square' type roof rack, so do not fit my current roof rack system (I also have a Thule roof box now). I did phone a Thule dealer and they said that Thule do not make an adaptor kit. Maybe check the model number to see if they will work for your roof rack system. They could also be useful in a garage based ski storage system. It wouldn't be a problem for you clever guys and girls to design something. Either pick up in Bondi or if you are quick Mrs S will be down at Jindy this weekend for some van camping (I have to stay in Sydney for work ). She could bring them down. $45 (were $200 new).