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Thanks for the detailed reply. Yes, my next step was going to use some padding to try to move the weight closer to my body. I was worried about the frame strength, but it seems to be holding up OK. I don't need to be comfortable for an hour, just 30 minutes, but I'm having to stop frequently to lean over and give my shoulders a break. I'm able to slip my hand pretty easily under the shoulder strap, so I don't think it's carrying a lot of weight.