I assume you read the post below yours, that was pretty simple and easy to get a few cells pulled. To me, the most difficult part has always been getting enough nurse bees in the starter box and that is important. I think the next time I try I am going to use a five frame box so I can crowd the box with fewer bees. Some of us love to find excuses for not grafting (present company excluded :-) ), mine is my vision is giving me trouble.