The velcro attached under the bunkend is ripping off. We tried to re-staple but the staples don't want to go into the wood all the way. One problem is that it looks like the original velcro is so flimsy that the staples eventually rip through. I can replace that velcro with sturdier velcro, but I know the adhesive won't hold through the heat and cold temperatures and we think it needs something more secure. Special staples? More powerful staple gun? Something else? Anybody have any tips or tricks?