I have blown out the o rings on my Taifun gs. I went down to home Depot to get some but they are too thick. I did a Google search and did find some o ring kits out of the UK. Trust me Google really is not my friend. I was hoping maybe someone knew of a place state side that might have them. I am not opposed to getting them from the UK I just did not want to have to wait that long that and I like to buy from places people recommend. Thanks for all your help.