I have a set of 2021 T100 irons. I ordered them with Tour White s400s. I am thinking of re-shafting. My question is pertaining to swing weight when I change from the AMT to constant weight shafts. Are the heads a standard weight currently with AMTs tip weighted to get get specific swing weights or are the heads special to the shaft profile? I want to put in Modus3 Tour 120s and just curious of what's ahead of me. Thanks.