"avid_hiker" wrote in message
ups.com...
Here is a link that may answer some questions/concerns.........

http://www.naturalhandyman.com/iip/infxtra/infpre.shtm

Sounds like the boards warped from drying out. And the gap would be
from installing the treated board with a gap....they should be snug
when installing (new board) too allow for drying. Go to the above link
:-)

I don't know about the snug thing. I stained a 2 year old deck and it was a
real bear because there were no gaps (and the slope was wrong) so there was
no way to drain the deck when cleaning it. These boards sure didn't shrink.