I'd suggest drilling and tapping that ring for a couple of short cone-point set screws to secure it to either the bell housing or the bearing retainer. If it slips out and gets wedged between the throwout fork and the bell housing, things could get "interesting" in a hurry!
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!