Hello All: I have a lucky curve Pastel Lady's fountain pen and I am having a devil of a time getting the pressure bar into the barrel. If someone could give me help. I have done many before but never with the lucky curve still intact. Scewing the section in and trying to get the bar into the barrel is not easy. I keep pushing the bottom of the sec into itself and thne have to unscrew the section again to pull the sac out again. what can one use to hold the sac out of the way whilse pushing the bar into the barrel. The hole at the end of the barrel is quite small. Any help will be appreciated.