I am restoring a 300B Cabriolet 4dr convertible and am having a problem with the carburators. There is fuel in the bowl and it leaks down over night. At 40 to 50 mph it hesitates and almost feels like there isn't enough fuel pressure,but fuel pressure is at 2.13 psi which the manuel says is good.Also,is it the nature of the beast that I have a new clutch assembly and fly wheel has been turned,but still grinds in reverse. Disc isn't slowing down fast enough. Would appreciate any advice or suggestions. Thank You.Gordon Ward