Six4Three5 got this advice last night and scoffed at it hahahaha!
It's true though, I much prefer being patient with a toothpick over the smear method. Comes out waaaay cleaner.
For sure. I have an iron fitting Saturday and the 715CB is first on my preference list. If you find an easier way to fill in the B, let us know! I've been meaning to try the bottles out, but I wasn't sure how much easier it would make paint filling.