"We will try to do this for every company..." If for some reason this term is not exercised, it will now unequivocally reflect badly for the company. I don't question the good nature and authenticity of a YC "try", but the sentence does naturally express doubt.
We will do it whenever we possibly can--our goal is 100%. There have been occasional instances where a company doesn't get us docs until 3 hours before a close or something.