For those that like to tinker with their webers,these are getting harder to find.
http://www.ebay.com.au/itm/Weber-34mm-v ... 5894cda24d
http://www.ebay.com.au/itm/Weber-44-DCN ... 5894cda229
http://www.ebay.com.au/itm/Weber-DCNF-f ... 5894cda264
36 mm ones for sale also. J.