Frankenstein MB Air m1 Rebuild Advice?
EDIT: Don't over think things! I decided it'd be worth taking one more stab at popping off the caps for the troublesome keys. Cleaned them with isopropal in and around the scissor switches and now they work great! Not 100% factory perfect, but way better than before and they actually feel like keyboard keys now. Problems solved!!
tldr: how important is reapplying the adhesive? Will I be ok with just re-screwing the main parts? Any other concerns I should have with this frankenstein project?
I have two used m1 MacBook Air laptops (a2337) and, between the two, I should have enough parts for one working computer. This would be a repair for mostly my personal use. I have disassembled and reassembled other laptops before, but older laptops that are not as propietary or glued down as most Apple products. Here's the story so far:
MB 1 (basically a donor unit): had a good screen, probably good keyboard, not sure what else is salvagable. Last user reported that an Apple store said the charging ports were going bad, then the battery died and it never turned on again despite charging a lot on both USB-C ports. After disassembly, found very small spots of corrosion on the USB-C and headphone jack daughter boards. Keyboard & trackpad ~~feel~~ fine but unable to seriously test. Was supposedly working fine, other than charging issue, until battery died last. Batteries seem to have no damage or bloating, and no other board corrosion (that I could see from just a screen removal job).
MB 2 (recipient device) Seemed to be 90% good. Had a broken screen, then later found out it had a few keyboard quirks. Otherwise great, just some cosmetic scuffs.
My original goal was to just pull the screen off MB1, slap it in MB2 and call it a day. I did that, and that worked great until I was able to actually boot up MB2 with the donor screen and see that some keyboard keys only work inconsistently. The usually work, but feel like some of the scissor aparatus parts are damaged from use. I did some research on iFixIt and found out that keyboard replacement is an almost entire disassembly.
So new goal: disassemble MB1 more, put the good parts (motherboard, port daughter boards) from MB2 onto the keyboard/frame upper from MB1, possibly keep trackpad+speakers+batteries from MB1 to avoid disassembling parts that are glued in (and have a chance of actually being ok still), and get back to one fully working MacBook. I really want to avoid ungluing parts from the frame, and don't currently have the right kind of adhesives to re-glue them if I do.
Does this all sound reasomable? Are there any other warning signs or considerations I should keep in mind? Am I just asking for trouble doing this myself? I have a local repair shop that I would probably take on the job for just labor cost since I'm supplying the parts (and all official Apple parts too). Just wanted to avoid paying someone else to finish my originally-supposed-to-be-free 45min ewaste salvage project. Maybe I should just live with the kinda wonky keyboard, or even pass these along to someone else as cheap parts for more relairing reputable MacBooks?
Anyway, thanks for hearing this out. Any advice would be greatly appreciated in the comments!