Some things to double-check that MAY help you... 1. make sure the IK on your figure is turned off before setting up your cloth sim. 2. Before importing and parenting the object to clothify, make sure you've zeroed your figure. 3. Make sure the object to clothify is parented to the figure's hip. 4. Pose after doing all this and after setting up the simulation, but before running the drape/dynamics sims.