983k blind bore hosel?

My 983K driver (SN# 38CCP) Aldila NVS 65R shaft recently broke. When I removed the broken shaft from the head and went to clean out the hosel, the drill bottomed out on metal at about 1 1/2 inches. It appears to me that the hosel is not a thru bore design as all the literature states but a blind bore. Did Titleist ever replace  the 983K thru bore hosel with a special blind bore hosel possibly to accommodate the shorter shaft parallel tip?

Hi Mark,  Not sure what metal you could have been hitting other than the shaft plug.  When the club is built, the ferrule is attached, the shaft is inserted all the way through the head, the shaft tip is cut off and a plug is inserted into the shaft (to plug the shaft) and it was buffed out.  On the bottom of the head, you should have seen two rings where the shaft was inserted.  The outer was the shaft and the inner was the plug.  There was no metal used and no special blind bore hosel.