On Tue, 05 May 2015 11:50:24 -0400, John Grossbohlin wrote:

If the blade is bowing despite the tension setting that suggests that
the feed rate is too fast for the saw and blade. With some boards I've
had to feed at a painfully slow rate on my 18" Jet...

You're probably right. It took me a long time to learn to slow down on
my 14" saw :-).