Board Thread:Questions and answers/@comment-26431461-20160403235812/@comment-27306930-20160406225741

Ugh, I hate when this happens. Mojo is right, use progressively larger drill bits until the heads pops off. I'm not worried about replacing them, the NF had more than enough screws.

BTW, BigShock spring upgrades are also easy, but you'll need a replacement spring, or another spring that fits in the plunger cavity.

CycloneShock is a bit trickier, but again, you'll need a spring. And don't remove Air Restrictors on CS. It works better with it