Was working with my Krome a couple days ago and with the cap on the cup, I went to backflush to mix my paint. Guess the air hole was clogged and it blew the cap off,no big deal. When I pulled my needle to clean after I was done, there was paint up to the air valve. Cleaned it up good and when I painted the next night same thing,paint up the needle. Did I blow the needle seat with the pressure? Is it possible that I backflush too much and that's what damaged it or maybe just wore out? Thanks in advance.