dont need to do anything with all thread, take a punch and knock the bearing straight in the bore, refit the speedo housing, if it doesn't go all the way in tap it with a copper mallet.
using the bolts will as you found out just knacker the threads.
as for the stripped thread, its helicoil time, which is gearbox off
using the bolts will as you found out just knacker the threads.
as for the stripped thread, its helicoil time, which is gearbox off
need a part number? http://public.servicebox.peugeot.com/ and http://service.citroen.com/ will sort you out.