A freind of mine brought the two SU carbs and manifold off a 1962 Volvo to me. The problem is a fuel leak where the jet feed tube screws into the bottom of the float bowl. It has a peice of what appears to be nylon tubing with a ferrule, the problem is one of the ferrules is missing. The local imported car parts store informed me that there haven't been SU parts since the Carter administration. I can make a new ferrule but I think it would be cheaper to buy one, does anyone have any ideas where I can find one of these?