Just finished up, took me about 35 mins. Not bad at all. Played the YouTube vid on the laptop as I went along. Stands up like a piece of cake. Me Likey!
Oh yeah... Spring puller, what spring puller? This is a spring puller in the house of Gritz. 12" vice-grips and a "manipulated" framing nail:
If you are even 10% mechanically inclined, this job is for you.