Wow thanks Mark.
Followed your instructions, Wasn't hard to get the pin out for me, I guess it's a bit of luck how tight it is Orion. I'm glad it wasn't difficult for me though.
Had a look and can't really see any damage on the O-rings but it's pretty hard to see much. There could have been some dust or grit. Even harder to see anything in the spindle/bore/valve seat, the best I can do is clean it as best I can anyway.
Trouble is I don't have any silicone grease all I can find is petroleum jelly. Where do you recommend I get some from? about to go out to doctors now, could pick up some. I did find this place and I'm happy to pay that much but I it's basically the same price as another stove...
http://au.rs-online.com/web/p/greases/0494124/GPSGuided Metal around the valve knob is fine, just got a bit black from the orange flame higher up, but obviously that just wipes off.