I think you have a good point. I never though that my support had may be a part of the issue. the 20 years of 1911 shooting never showed this issue. I guess its in part the size of the grip. I noticed that i am unable to get full trigger finger pad flush on trigger. by that i mean that the pad of my finger only reaches the safety and right side of trigger. If i shift my grip off center of the web of my hand then i can establish better trigger finger to trigger contact. I will try your suggestions this weekend at the range. keeping my fingers crossed.
"Life shouldn't be a journey to the grave arriving in an attractive well preserved body, better to skid in sideways, cigar in one hand, favorite beverage in the other, body thoroughly used up, totally worn out, screaming WAA HOO - What a Ride!"