You may need to put the new flanges in different spots. Grind them down and
paint over may be a lot easier than gettting the old lags out. Hammer drill
is useful for making holes in concrete.

--
Christopher A. Young
Learn more about Jesus
www.lds.org
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"Tom" wrote in message ...

"charlie" wrote in message
...

cut a slot in them with a dremel and use a screwdriver?

using a left handed drill bit could back them out enough to get a pair of
vice grips on them

I could try that but the appear to be quite deteriorated .