This week I'm going to try to organise someone to silver solder the 6mm barb fittings in the fuel supply line to the right hand carburettor. I purchased some S/S 6mm barb fittings recently with the thought of silver soldering stainless steel fitting to a stainless steel pipe. I have cut the fittings in half and will decide which half to use when I discuss it with the soldering person.