Pretty much the same for me. For shooting off a bench, it seems like my 13-1/2 LOP is OK, but think it could be longer. I find my forearm is at an angle to the rifle, forcing my wrist to fold back at angle when the rifle is gripped. It does not really feel uncomfortable, but when I tape a pad between my shoulder and buttstock, I think that may be better.
I do find that I have a tendency to force myself into position to get a good sight picture (not good), so am going to remove scope, find out where my head naturally falls on the stock comb, and then position scope to fit that. It is already clear that my scope is too far forward.
Could be all wet on this, but it seems to me sleeve length may be a good indicator of proper LOP. I am 34 - 35, which is longish, which at present, forces a relatively sharp angle between forearm and upper arm. A longer LOP (w/temporary pad), feels roomier and more natural. I can see why adjustable LOP is so valuable!
Phil