my dart left me stranded

mullinax95, I've seen several posts here and there about adjusting the rockers running. It is nearly impossible to adjust mopar adustables with the engine running . The adjuster is at the pushrod end and that spells trouble to me. How can you keep any kind of tool on the adjuster if its bouncing up and down? Chevy rockers are bolted from the center and I have done those running, but never a mopar shaft rocker system. Is there a trick I'm missing?