Further update here. I've replaced all of the resistors in the set (except those in the tuner). Interestingly enough my B+ is now at around 300V, and does seem to be contributing to the excessive width problem.
Apart from that, the picture is nice, but could benefit from an alignment. It's a bit fuzzy and the fine tuning is at one end of the extreme... as well as some ghosting to the right of the image and sound bleeding. I'm trying to track down some gear to help me with that now.
