Poser gets more complex every day... PET is right, I was talking about the Body Parameters - that's those little wheels... The "conform to" stuff for pants is not too reliable, so one usually has to correct the feet parameters - they influence the last two inches of the pants.
And the "Body" parameters control all the body, so if you select Pants Body and increase "z-dimension", the pants will be deeper and fit a little better. Clothing is terrible difficult. Nude stuff is by far easier. Nice work on the textures, though!