Hi Paradox and deviosi,

This is the best way to solve the rail problem. It's called the Gusset repair method and the following link shows a good example of it.

https://www.outdoorking.com.au/forum/ubbthreads.php?ubb=showflat&Number=64426#Post64426

This doesn't just repair the cracks but actually strengthens the whole rail so as to avoid it opening up again in a couple of years. It is crucial that the original nuts are tied in to the gusset as well and once that's all done then I would follow deviosi's method of solving the the cracks on top.

Cheers,
BB

I live a 24 Hour lifestyle, but every now and again I seem to fall asleep, well at least that's what my wife tells me.