On Jun 30, 12:20 am, mm wrote:
On Fri, 29 Jun 2007 21:39:07 -0400, "Smarty"
wrote:

I also had a lot of problems. The hardware guy said that they work best in
new concrete and that my 30 year old concrete was "too hard". Go figure!

Concrete gets harder every year.

More expensive too.

R