Gentlemen: Thanks for responding. I am not thrilled at the prospect of having to use a pneumatic nailer (although I'd love to buy one, I'm still trying to justify the Hilti demo hammer & the porta-band as necessary family expenses!). I guess I'd better take a look at some in the local Home Depot, to see how they work. I've never used one. Any pointers here are appreciated. (I wonder what rentals go for.......) As far as self leveler goes, is wire mesh essential where low spots are only .....say.......15 sq. ft?