Choke and windshield wipers

If you have recalcitrant wipers and the seperate Stromberg choke as used on EE3 you might check the clad copper gasket that mates the choke halves. The choke has constant engine vacuum applied to it and tees into the line to the wiper motor. It always leaks some through the piston by design but with a crushed gasket can leak more and reduce vacuum to the wipers. I put an Oring around the piston cylinder inlet to make sure the only the piston blowby was a leak source. I had other issues going on at the same time to contribute to the problem but now the wipers are working again.