Originally Posted by rousseau
Oh, there is about 2" clearance for my bike as per your test, so I guess the bike is the right size, after all.
There are of course a lot of technical fit issues that go along with this...but like I said, that figure will get you "in the ballpark" frame wise. It's minor fore/aft adjustments from there.
By a level saddle, you shouldn't be able to actually set a level on it from nose to tail, and have it come up mathematically level. A "level" saddle will actually have the tail end ever so slightly higher than the nose.
Hopefully this starts to work out for you a bit better.