Maybe someone can guide me or explain this: So I have a 7620 that came stock with the FUtone noiseless springs and brass block +a tremol-no. I loved how easy it was to rock the trem up and down compared to the lopro on my 752, which felt much stiffer. Hoping to solve this, I ordered the same set of springs and installed them yesterday. The lopro still feels stiffer than the lopro on my 7620, particularly pulling up the bar. Anyone know why is there such a drastic difference? I also tried without the tremolno arm so the tremolno is negligible here. That would only leave the brass block in difference. Could the age of the bridge somehow be the reason? This 7620 is from 1999 while the 752 is from 2016. LOPRO7 by takotakumi posted Dec 1, 2017 at 12:18 PM TLDR: why is the lopro on my 752 feel stiffer to move than the lopro on my 7620?