I've been filling cartos for a few weeks now, probably correctly. I've been through many tutorials but I noticed the very first carto I filled had two stoppers. The first at the end which I replace by a drip tip and a second that sits just above the filler. None of the replacement cartos I've used came with the second stopper. Is the second one above the filler necessary to install after filling?
Regards,
-Ray
Regards,
-Ray