Mike let me say it this way my core was designed 48 lb @31 including 1 peace of stabil kore .042 glass, I'm changing the stack .030 ul clear over stabil kore so that will be addition of another peace of stabil kore the stack will change about .004 thicker I realize I should pick up a little weight but going to narrow front view 1 1/4 so my question is , is this stabil kore really neutral as claimed or did you pick up aditional weight ?