Bastards are tight as well on the heads. I was gonna remove a head about 3 weeks ago. I removed all but 2 bolts with my impact. The last 2 just laughed at me. A good battery charge would have helped :/
Yeah, I need them for a L16. Definitely don't want it to fall on me. I dropped a 5 speed on my pinky once and it felt like it was gonna pop. I was too chicken to drill a hole in the nail to release the pressure. My nail finally fell off like 2 months later.