Hey all! I have an EF falcon, and about 2 months ago the hydaulic lash adjusters started ticking like crazy. It seemed to be coming from the rear intake side, so I got 4 new HLA's from repco and replaced the 4 rear ones on the intake side. Well, this didn't cure the ticking, but changed it slightly, and 2 months later I take my rocker cover off to find that 2 of the rocker arms (which have new HLA's) have broken. The part of the arm where the HLA sits into has snapped off, right on the end of the arm. So the HLA's are basically sitting in place by the skin of their teeth - so to speak.
Aside from having rocker arm fragments in my oil return ports, I'm worried about the same thing happening when I put new rocker arms in, so my questions is, what is likely to have caused this?