Gents, I have the pump and downtube mounted sight glasses system for my 1920 model. I am bothered by constant leaks where the pump goes through the frame and the system itself seems a poor method of oil regulation even though it works well. Basically it seems to consume loads of oil. Anyway, the S.I measurement of a drip seems a preferable way of delivering the oil and I was wondering if anybody has a dripper system I could buy please. Thanks, Will.