I know Gary had a failure. I've been running one for several years, even swapped it to a different cam last winter. No issues for me (so far). No idea where the woodruff key came from, do they ship one in the kit and that's the one that won't work?
Only issue I have had was that the pump arm would rub on the links of the timing chain. I believe it is an issue because a roller cam can move forward in the block a little while a FT cam is constantly pushed back into the block. I tweaked the arm where it rubbed and it stopped being an issue. Wasn't much of a rub.
