Plus: Nice to see the Caps get on the board first tonight, courtesy of a beautiful tip in front by Aliaksei Protas – and, of course, nugs. Minus: If John Carlson doesn’t become the joker after the sheer number of goals that have been washed out when he’s a part of the play, he’s a stronger man than most. Really tough to figure out what’s goalie interference these days when the only criteria…