"Arnold E,i fully agree.3 LAME failed to perform their job."
Mate, a Tad extreme suggestion I think.
Regardless of the repartee' between them that break em and them that fix em, its our ass..es that our brothers in overalls protect.
In 47 years I've never known one that hasn't protected us from ourselves.
Why this aberration occurred I have no idea, but them that fix em can only work on what we tell em, ie. "there's a Clunking noise coming from the KAfoofle valve"..any blame for this incident cannot be laid at the door of them that fix em.