Broke a lower front shock bolt on 2WD

Ok, one of the lower driver's side shock bolts broke off on me when I was changing the shocks. I drilled it out but you don't always go straight when doing this so the existing threads were toast. They have like a square nut above the hole in the lower A-frame that appears to be spot welded on. I decided to try drilling out it out from an 8mm to a 10mm and tapping it with a 10x1.25mm. Problem was even drilling out the hole with for a larger bolt didn't get me a new nice round hole so the tappped threads are not very good at one point on the hole. Bolt could be snugged up but I don't think it's the best fix for the long term.

So since this is a blind nut situation what's a more perminant fix short of replacing the lower A-frame. I can't be the only one who has had this happend. Any suggestions??

 

Why not just cut the welded on nut off and just put a new nut on (not welded) and use a crush washer to keep it tight.

 

x2

 

Got a picture?

 

It's back together so you can't see the square nut now since the shock is filling up the hole.

If you torch off the nut you need a replacement that can't move since it's blind and you can't get at it after the shock is in place.

I'm looking at this as a possible solution but in metric: http://www.grainger.com/Grainger/MARSON-Nut-Insert-5JL27?Pid=search