Visually inspected the old bellow and discovered holes/rips. Searched for the part number for this particular model. Part was most affordable at this website $5 - $20 cheaper than elsewhere. Ordered a replacement bellow and it came faster than expected (1.5 days). Watched an instructional video on youtube and got started. Removal was a breeze, tools needed were all straightforward (nothing exotic). Re-attaching the bellow turned out to be the hardest part - a couple of scraped knuckles but eventually got it on and tightened up the clamps (one required very small screwdriver to tighten in a blind setting, the other was more straightforward). Checked to make sure there were no leaks by running a very small load, and then reattached the front fascia. Everything is working well. Again, hardest part was reattaching the new bellow.