Not having much luck with your car, eh..
You obviously went too tight with the cover bolts you go to 10nm if you have a torque wrench available if not they are just a bit over hand tight, better to use a small ratchet like a 1/4 drive so you do not overdo it.
You should be able to pick up a cover at a scrapyard if you are lucky enough
The trick with the crank pulley is lining the notch with the woodruff key, maybe use a torch to see it is in position correctly as it is hard to see with the cover on.
I've damaged a woodruff key before cause it's not lined up right and ended up having to re-do the chains cause of that as i had forced the bolt on without being 100% the notch and key were lined up there is very little space to maneuver,
Because of that i always use a torch to see because i panic too much in case i damage another crank key. .
