No, you definately want to get that paint-shit out of there. Sometimes it's hard, I don't have a clue as to why. Try gently chipping it. If you weaken it the rest will usually crumble with the salt method. And then just rinse it out.

Personally, I like lightbulb vapes. Cheap, easy, and I like looking at the lightbulb after it's all clear... and I dont have that much trouble getting it just right. Just gotta watch it closely and time it right.