Finished tank assembly on both tanks and did leak test. I found a few very small leaks on the rear baffle/skin area on both tanks. After much research I decided to use the "loctite" fix and to my amazment, it worked fine. It was so easy I'm not sure I can trust it. I ordered some sender plates just in case I decide to do a real fix later prior to final wing assembly. UPDATE: I've just about decided to go ahead and do the pro-seal fix, it's just to easy to do it at this stage rather than find out after paint that the locitite fix didn't hold. I'l decide later for sure....