Quoted from jfesler:Check/replace the coil sleeve. Check the link and plunger.
correct and clean coil stop just a little bit with a stroke of a wire brush or sandpaper.
Quoted from pinlawyer:in putting in a custom shooter rod, now both it and the autoplunger are weak and seemingly misaligned. The latter issue
probably proper adjustment needed and a bit more aligning,tightening.