I did this today veeeery carefully. Took probably 2.5 hours start to stop. Booted laptop back up and everything works fine. I was tempted to not do all the logic board etc. but decided to go by iFixit’s guide. Worked well, but be patient, careful and gentle. I made a large piece of paper and placed components with a note of the step number as they came off. Then was easy to locate when re-assembling.