I agree with you from seeing that photo, it does look like the crack has propagated through the tab weld and into the tank skin and is not from above. I think it will be a tank out and repair or replace, not a simple job. The thin standard tabs will still crack even with tight straps but maybe not so easily? The bonded on strengthening brackets do seem to work, mine have been on for over 10,000 miles with no signs of cracks now. I would do the bonded extra tabs even if the tank is repaired, don't forget the lower tabs as well when doing the mods. I will send the MTWC tank repair article to you.


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