I guess what I'm asking is should my 1980 xs400 special be able to run 55 or even 65 mph? I've had problems with the bike since I got it in March. I've rebuild the carbs because gas was leaking into air box and found floats had cracks in them. My last ride was a few days ago and it struggled to keep 50 seems 45 was really the max. While riding one of the exhaust studs broke off flush and haven't had a chance to fix that yet but now gas is leaking again for the 4th time. One of the "bracets" on the carb that holds the float pin was broken by a prior owner. I'm not sure I'll ever get this fixed with out replacing the whole carb body. It looks like they dripped solder across the broken side to complete the hole. It seems to hold well but I don't really trust it. Any ideas?View attachment 32369