I agree, I had to open up my 100-piece toolkit for the various bolt tighteners. I am probably younger than you and tried using my fingers for the first 10 minutes and realized that was futile. There are some really annoying steps in the assembly too, like fixing the z-axis screw stabilizer, which can only be done with a tight wrench grip and an awkward hand position. I think I might go back through the guides and leave notes for future assemblers for what I think should be important. That way people don't make the same mistakes or waste time like I did.

So far, I've gotten one print to come out. The benchy boat printed alright, there are some oscillations in the z-axis that I need to fix. My x-y platform shipped with a pretty evident curve in the x-direction, not sure how to fix that (the heat bed is straight, thankfully). On top of that, I had some pretty noticeable stringing. My hope is that messing with the temperature settings will alleviate that problem. Got OctoPi working with a dedicated power supply, which is not ideal but works. However, I am unable to print any more at the moment. The nozzle become completely jammed. I've been soaking the nozzle in acetone for two days, with the hope that it'll loosen the debris inside. A couple of amazon searches revealed that the extruder, fan, hotend combo had some questionable reviews, most notably about the nozzle jamming. Hopefully, the nozzle will eventually clear up in the next few days so I can fine tune the axis travel. This is also my first 3d fdm printer, so like the other comment, I have nothing to compare this to. While it has taught me a lot about 3d printer construction, I do feel like there were some design flaws. In the coming months, I'm probably going to mod this printer to upgrade it. (First thing I'll do is probably replace the nozzle) I think others should as well.

I'm also having this problem Edit: After plugging in the usb power cable directly into an outlet, I no longer have problems. I feel like this problem should've been addressed from a design perspective however.

Also looking for this...

This could work-- I am reluctant to attempt though. I'm not sure if I'll be able to not damage the switch in the process.

Currently, I've removed upper guide on the Z-guide so that the gantry can fully push to the end while also triggering the endstop. Works alright, but obviously I'd like to reattach the guide if possible.

I did this shortly after I posted this question and while it was closer and actually touching the endstop, it would not trigger the endstop fully when pushed to the end.