thanks. i fixed it for now. FYI if anyone is in this situation...and like me you've lost the bolt...i just stuck a smaller bolt in the hole, wrapped in enough tape to add friction, and then covered the screwhead with steelstick / plumbers putty...then kneading it onto the plate as well. it'll work for now. also tighten the other remaining bolt, and now it feels like new, goes into PARK fine, and now the indicator aligns up with the actual gears. i'm about to attempt to flee crazy San Francisco after 13 yrs. to Dallas TX pulling a 4 X8 trailer... it woul've been impossible without PARK and the Parking Brake. Feel much better about the Trek, now! thanks for all the help with this thread. Shops wanted $575 to fix it here in S.F., and i'm a broke **** due to San Fran closing all small businesses with 2.5 yrs. of Covid lockdowns and now the fully sanctioned crime... i'm the last one left on my block to close down...Fleeing to greener pastures! Wish me luck! this forum has helped me make this move even a possibility. Thank You All who contributed to this thread over the years! Wish me luck!