I have several tips for my Sagola 4600 and tonight I was getting ready to switch out the tip from a 1.3 to the 1.3 xl for a spray out and got the needles mixed up, geez...really. Looking at the inscribed markings on the 1.2xl, 1.3 and 1.3xl needles they all show 1218. I mic'ed the needles and they all come up the same, however I have no way to mic the very tip. Anybody know if all their needles are the same size or at least for my tip sizes? I looked through the Sagola catalog but there was no answer to this.