At least with a diagnosis; you now have a way forward Micah.......
Yes i bought full cambelt change kit from ALS like you. They were the cheapest genuine Renault parts around. Guy who works on my car isn't a Renault specialist and actually prefers me to do the research normally and acquire the right parts. He's happy to 'just' fit.
So you did exactly the same as me effectively and got seriously unlucky. And luck is about the crux of all this imo. Its just rotten luck that's all.....
I'm not really sure there is moral to this story as such.
Best of luck pal.
The moral of the story is... shit happens
Is what it is. I just want to get the car back this week as I need it this weekend, being my birthday and all