I have a pair of Patagonia Men's Gi III pants that are inseam 32" (shortest size they make). This is slightly too baggy for me and defnitely makes it unusable for hiking. Is there anything special about hemming nylon pants versus dress pants or jeans? Can a local seamstress do this work? I would do it myself except I don't have a sewing machine and I don't know how to hem pants.