I received my Gen 4 irons with SW of C9. I would like to change to D1 at least. I understand the weight port screw can be removed but it in there with red loctite. I tried briefly to remove it by applying about 30 seconds of the small butane torch flame directly on it. I stopped because I was not sure if that is the right way and I just have to heat it longer to melt the loctite.
If there is any other way to do it with lesser effort would appreciate any feedback.
Thank you in advance!