i think they've just been bad.
1. kg hasn't shot well. he's going inside even less than last year, but he is also missing his usual money 12-18 footers. i expect those to come around
2. rondo has not been scoring well. he's been doing too much dipsy do stuff inside. he needs to shoot more good shots; he often gets to the basket, decides not to try to lay it in, then gets stuck making a bad pass or a worse shot. he needs to have an attack to score mentality sometimes, instead of constant fancy mode.
3. pierce is often the one that stops the ball movement, but then again he's been playing the best of the starters and has far and away the best +/- on the team.
4. ray isn't shooting well. some of this will come around, but then some of this was hinted at by his under-reported drop in production last year with no real increase in efficiency; he just dropped a bit and at his age, will continue to. i must say, he's also one of the worst good players at running a fast break. it's always surprising.