the arisaka is not a trash gun by any stretch. for a while hey were in high demand by big game hunters who liked to use the extremely strong action for rechambering them for big game calibers.
yours looks pretty trashed. i would take it to a different gunsmith that wasnt talking out his butt to find out if its in working condition or not and if its been rechambered or not.
"Gun control: The theory that a woman found dead in an alley, raped and strangled with her panty hose, is somehow morally superior to a woman explaining to police how her attacker got that fatal bullet wound." — L. Neil Smith
The problem with being stupid is you cannot simply decide to stop doing dumb things...
"I crapped my pants to avoid the draft!!" -Ted Nugent