Greetings jimi911;
I've done some research during the past few days, and as a result, I wouldn't be concerned about your stem. I e-mailed an old mate of mine, who worked for a Specialized distributor, and he in turn e-mailed a chap who was a Specialized Tech. rep. during the 90's. He indicated the initial batch of stems were fabricated by a titanium company located near San Francisco with the rest supplied by a Tiawanese company. All the stems were investment pressure cast in a vacuum, which he indicated is the method used to cast titanium parts for the chemical and power industries. He further recalled only one law suit, and that was settled out of court. The handlebar face bolts were not properly tightened by the complainant. Sorry I took so long, but this had me concerned as well. Make certain all the fixing bolts are treated with copper-slip and tighten them properly. Take care jimi911
Regards