I cannot stress enough to make sure you drill step holes in the proper location when cutting your Heliums. I had one stick that I thought I might have gotten too close to the milled slot. I used that stick at the base of the tree this morning in case of failure. I have climbed this stick several times before with no problems. This morning the stick broke at the hole. I only got a scrape on my hand from hanging on to the top step. I examined the step on the other side of the stick and it was drilled properly. After checking all gear, it appears that was the only hole not drilled properly. I was safe only because I noticed something before hand. I still made it up the tree safely before shooting hours, but I can't imagine how bad this could have been for me or someone else if it hadn't been noticed and used higher up the tree. For every one who has cut Heliums, please go and check the bottom holes and make sure they are centered between the slots and not too close to one of them.