elbow/forearm grip butterfly lower arm?

Hi girls, I have problems engaging the shoulder of the lower arm in the elbow grip or forearm grip butterfly. It feels that my body is twisted in a way that makes it hard to engage. I do keep my body square to the pole. Actually, my whole stomach has still contact with the pole because I can't hold the position away from the pole without a strange feeling in my lower shoulder. I get into the move from an inverted crucifix. I think the "twisted" feeling comes from grabbing the pole with the upper arm. Are there some tips or cues to think about while doing the move? I don't have this kind of trouble with a split grip butterfly, because there I can hold most of my weight with the upper arm. I'd be really thankful for any insight from you, as I've struggling with this one for quite a while and can't figure it out :-)