1980 Cb 650 Custom. I recently paid a shop to install new rings/valve\nstem seals/lapp valves. They charged me for a gasket kit. It leaked in\nthe valve body area before and also after the rebuild. I cleaned the\nwhole area the best I could and took it to another motorcyacle shop\nand even they cant tell me really where it is leaking from.\nDoes anyone have any ideas as to what can be done to get this leak\nfixed. I am going to take it back to the person that did the top end,\nI wonder if he forgot to put in a few o-rings somewhere.\nI have heard of coating the top with powder and see whare it leaks\netc, but maybe the best thing to do is to take the valve body off and\nstart again?\nAdvice appreciated.\nThanks.\nTim C.