I've come across a few who have had difficulties, and it's turned out to be glue or other gunge caught up in it. Sawdust & WD40 mush was another. The little lightweight ones are operating close to the edge of their capabilities and everything has to be right. Good hand pressure & not letting the gun recoil is another thing.
Oh, and jam will jam. So will honey & propolis.... that was another.....
Bookmarks