Art pen

I have used again after few years the Art Pen,I remember now why I stopped using them:
meanwhile it works,it doesn't,than it gets stuck,you shake it and some inks drops out ,push it and a big drop goes on the comic page you nearly finished ruining the "b...dy" page,you open the pen first in the morning and it's all leaking and sticky,after an hour of working with it your hand it's marked with ink..etc.etc.