If the stuff is supposed to be good to 128 ft./lbs. your head bolts aren't even that tight. I wouldn't be concerned about it holding. I might instead be concerned about being able to get it loose again later if needed though. But, eventually when you "fix it right" you'll be dropping it, drilling it out, and retapping threads or using a helicoil anyway so whatev.
It's just a little clutch cylinder. As long as it's held snugly in place, it'll do its job.
It's just a little clutch cylinder. As long as it's held snugly in place, it'll do its job.