Re: Yo, Canadian New Guy.
Welcome to the forum. Sorry your early experience hasn't been the most positive.
You've done well getting rid of the chain tensioner but just make sure those sprockets are aligned and your chain tension is good.
As for the primary gear failure, it doesn't surprise me much. I recently had one that was drilled (machined) off center and it wobbled badly against the secondary gear. It was noisy and jerky. I'm sure it might have failed like yours if I had not replaced it.
I hope you get all the bugs worked out and enjoy your bike. We've all been through the learnig curve and know how frustrating it can be. However you sound like the type who can figure out the mechanical parts and that puts you well on your way to success. Good luck.
Have fun, ride safe.
Age and Treachery Will Always Triumph
Over Youth and Skill & "Charlie Don't Ride"