They used to be top quality. I seem to remember an ownership change that might have had some influence on the current quality, but no definitive word on that. Their rebuilding facility in Jasper Indiana was once a field trip destination for my father's auto mechanics students from the high school in Nashville where he taught for 15 years. That was back in the late 1970s to the mid 80s. I ran the same shop from the mid 1990s until it was closed down by the Nashville school board in 2010.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!