If anyone has any question on the topic of meshes in SL

I have been rigging my own things made in marvelous designer with no problem but the ONE item I wanted so badly full perm in world, came out all wonky... the pants legs have these sticky vertises between the legs when I go into pose mode and move the legs apart, also unfortunately uploaded that way as well. I can't get between the legs on the model to grab the veritses but they don't actually touch... I have no idea why it's doing it. Grrr!