I had the same issue with my G-tube. Burning, itching, leaking. I found these wonderful waterproof band-aids that I would put over the site. Only problem is, over time this ends up irritating the area where you put the band-aid. I would actually end up with blisters and very bright red, raw skin from peeling the band aid off. It was miserable. I found that it leaked too the most after a big meal, or when I was out partying. I constantly ruined my nice clothes and always had a little acid spot on my shirts right where my g-tube was. So in short, there really is nothing you can do to make that situation better besides taking it out. My g-tube was a Mickey button and my doctors suggested me getting the one with the balloon on the inside so that it would stay more flush to the inside of my stomach and not leak. I'm stubborn though and wanted the flattest button possible on the outside. Getting my g-tube out was probably the happiest moment of my life after transplant. I hated that thing.