What's the brand of regulator?  Recently a guy posted on a Mercedes
forum that his less than year old Uro brand (made in China) regulator
snapped off a couple spot welds in a suspiciously similar manner.  He
drilled and added screws to reinstall the broken piece, but you might
try rivets on yours.  The aftermarket supply chain is getting weaker
by the day.  Caveat to the emptor

On Wed, Jul 10, 2013 at 4:26 AM, G-Reg <sorkilmo@gmail.com> wrote:
> Spot welds broke on a power window regulator that I just got new from one
> of our fine vendors.
> Anyone have an idea of the best way to fix this?
> Window was up and down less than 100 times.
> Spot welds seem pretty deep to me but I dont really know much about that
> sort of thing.
> pics here  ---->   http://tinyurl.com/ocsbke3
> Thanks in advance for any advice.
>
> Greg S.
> Ottawa ON
> 87 Wolfsburg tintop

--
Casey