So, it turns out that my wheel is definitely on correctly. The cranks are correct, both L and R, and they match up with the pedals. The guy who put them on, who’s been in the business a long time, assured me that he didn’t overtighten or cross-thread. Perhaps it is these pedals. When the Nimbus X cranks come I’ll put in new, higher-quality pedals. We’ll see if this fixes the problem. I guess I’ll try to go a little lighter on it too, but I’m not going to stop hopping curbs. I really feel like I should be able to do at least that.
Thanks again for all the advice everyone.