I really didn't want to spend the money for Canon to repair nor the local camera shop. That, and when I got the part delivered yesterday...I didn't want to spend time dropping the camera off and not having it for several days. So those two items were my motivation. I also went into the repair knowing if I effed it up I'd end up shopping for a mirrorless camera and taking in comfort that I didn't have a choice. My lovely rationale.
No the first thing I did was kick the cat out of my office. I absolutely didn't want the furball jumping up on my desk scattering screws everywhere and risking one of his nine lives. And knowing he would meow incessantly to communicate his undying desire to be let back in, I put on some noise canceling headphones and listened to Lofi on Youtube via a second Chrome tab.
With everything now ready I started the Youtube tutorial and followed slowly step by step. I placed some paper on my desk and as I removed the screws, I documented where they came from and laid them in a similar orientation to how they were in the camera. I figured the tutoiral, the documenting, and the orientation would minimize any mistep on my part...and it worked.
Once I replaced the dial, I again took my time and followed everything in reverse order. This meant clicking the YouTube timeline in a reverse order and sometimes watching parts a couple of times to ensure my actions were correct. After it was reassembled I turned the camera to check power. Then I took a few pictures using the LCD display and ensure everything was in working order.
I did have one screw up and it was me being a dumb ass. I'm near-sighted. So when I screwed in the diopter and looked through the viewfinder...it was blurry no matter what I did. I tried adjusting it several times only to realize I needed to have my glasses on. I laughed and was relieved that was the issue after had gone through everything to repair the camera.
All in all, it took me a couple of hours to complete the repair and that was due to me being overly cautious. I wouldn't say it was difficult, just have to be organized and not rush any steps. And be mindful of the screws. Hand tighten, but don't man handle tighten them. They are small and delicate.
So for me, it was 100% worth me doing the repair myself. A $41 part and a couple of hours being intimate with my camera! lol!