Aluminum spar damage.

[irwinsailor]

Yesterday I peeled away the paint from around the ears that hold the spreaders on the masts. I had a very hard time getting the pins out of the spreaders so I was not shocked to see cracks in the ears that will need to be welded. I have read somewhere that there is a dye that is used to check a rig for fractures, is that a do it yourself process? If so what is it called and where can you buy it? I would like to test the rig myself and repair as much as possible before I hire a surveyor to recheck the rig. This will save cost of a second trip from the surveyor.