When at Winston's the other week we removed the dump valve and I noticed the gasket looked knackered so today I decided to go to jap import parts to buy a new dump valve gasket and a sheet of fine wet and dry, I got home but when I went to remove dump valve guess what no socket would fit I had 11mm and a 13mm but bolt was a 12mm which I didn't have. so I went to machine Mart in darlo to buy some new sockets. When I got home I removed dump valve and removed knackered gasket and wet and dried both parts so it's now nice and smooth fitted new gasket and dump valve, I'm hoping every thing is ok now so that's one job off my long list of things I need to change.