I got a brand new set of heads so I needed to install new rocker box studs. The studs were made by Sifton and made like shit. I understand the necessity for the studs to not turn out with the nuts if they need to be taken free but when the studs wont turn in more than half way without bending or being close to snapping, than WTF?
Notice how flat the threads are on the standard stud. It's machined like this to go in tight and not come out.
I ended up re cutting the thread about 2/3 the way up the threads. This is plenty to keep it securely in it's hole.