A list of gotchas is a great idea. Here are a few that got me:
- sort your 16t and 20t pullies into two groups and separate them. It's easy to inadvertently grab the wrong one if you're not paying a ton of attention
- space your z rails higher than the manual says. The only reason for mounting them super low is style points, but it makes installing the corner covers really hard. I had to loosen all my rails and work them up because they were too low initially
- if you have a wiring harness and PCB anything, double check the pin to pin wiring against the PCB pinout. My hardness was not intended for the PCB XY endstop I printed, which caused some initial head scratching when the limit switches were behaving oddly
- don't agonize too much over belt resonance
- there is a slim model for the z-end stop I had to dig up as the one in the main repo didn't fit my build for some reason
- you're probably going to print too many parts. This is ok
- you're also probably going to print too few parts. This is also ok