Anyone ever break/bust/crack/fracture the factory 273 adjustable rocker arms?

I ran Isky double valve springs with dampers and aluminum retainers with a .580 lift Isky cam for years and never even thought to check for spring/retainer clearance. (I know I machined the guides for teflon seals and the valve seats to accommodate the springs, but never touched the rockers)
Makes me wonder under what conditions there would be interference.