Glues will add very little mechanical strength. I was fortunate that the lead free solder used on mine tore cleanly form the pads and I was able to solder it down with good 50/50 lead/tin solder which is fine for occasional hobby soldering in a well ventilated area. i scraped some ground plane on both sides and trimmed away some of the RF enclosure lid near to the USB port. I made a solder bridge to the RF enclosure and further trimmed the lid so it fit flush, and gave about 1mm thick of solder for about 4mm of ground plane to the other side. So far so good but I am very careful that it sits safely when charging now and file down the locking nubs on microUSB cables.