"They" say that the double stock 110 springs are too stiff. "They" say to put in AV&V springs.
So I did. "MY" bike is in the shop with a broken AV&V beehive spring and bent valve.
I wish I could find "They" so "They" could pay for my 113 build.
No more here.
I default to my experience and that of others who I respect especially Sachs, 2 bikes broken here. There have been too many telltale signs on others I have had come in with not a lot of miles and the seat pressures 20+ lbs off what they installed at and less than original height and tipped tops. All signs of fatigue.
Not a place to take chances.
Quote from Sachs
"That being, the 1 big problem I find is if a spring breaks, usually the sh*t hits the fan. With dual springs, if a spring breaks, the inner spring will generally prevent the valve from having a mind of its own."
You've heard throwing the baby out with the bath water. Well there is nothing wrong with dual springs and they can survive a break. There are a plethora of them that will work well and have appropriate pressure and spring pack installed height / coil bind.