Great Tutorial. I also did this, with a hair dryer. It's the fastest cleanest way. I find I only use the hair dryer in about half the time you do, the plastic gets pretty soft, pretty fast.
Also, I didn't need a screwdriver or sculpting tool to put the elbow pins back in. I heated the forearm piece, and stretched the loop hole to almost double it's length, and with my thumb or finger securing the back of the pin, I stretched the loop over the head of the pin. Went on quickly without a problem. I use this method as it removes the risk of cutting the plastic with the screwdriver or tool while soft. There is a risk of stretching too far perhaps? But I've yet to break one that way. And by keeping the plastic hot with the hair dryer, I've yet to have any issues of the stretched hole staying stretched too far. With heat it returns back to it's molded size.
Great work HunterK!