MF, The frustration can be enormous but by the stage I have solved the problem and the body is sitting on the bench the last thing I could be bothered with is wasting more tim e going over to the press to crush it, the bin is much closer. As I said it doesn't occur too often but is frustrating when it happens as it takes me a couple of hours to set each carby up and have working. If I just have to pull the carb apart and change the body that only takes a few minutes.