I'll 2nd what JBooker said -
I find no need to baste (or inject) pork (it's already got enough fat / juice IN it)
I am finding that I like to trim-away most of the fat cap - which gives me more bark that I can keep to mix-in with the inner barkless meat.
I still use a modified version of the Chris Lilly recipe for the rub, but forego the injection.
When I take 'em off the WSM - I ALWAYS rest them for about an hour wrapped in foil. This lets the juices re-distribute themselves within the chunk-o-meat, and softens the bark to where I like it.
If the meat on the inside needs a bit more salt / flavor - I just mix-in a bit of rub that I've saved from my initial rub-down of the pork.
If you think that the meat is not moist enough (seems dry / hard to shred) - you may actually need to leave it on a little longer.
(Unless it is, for sure, getting dried-out and/or crispy - in which case you may be cooking at too high of a temperature.)