I'm not the brightest bulb in the box, but what does that tab do? I have never removed a fender off of a bike.
Don't need to remove the entire fender, just the rear section. And you're only interested in the nut cage on the right rear of the fender rails. By removing it, it gives more clearance for the larger tire. Not all bikes need it done, but if you're going to a c/t and the wheel is out of the way I'd just do it in case it might need doing later. On my bike, I just used a carriage bolt and inserted it from the inside and put a nut on the outside for a spacer, then placed the bag mount over it with another nut. Ended up doing the same thing on the front bolts as well, only those you thread in from the outside into the existing plate nut witch is welded in place. Do that on all four fender bolts and next time you want to drop the bags, just remove the nuts and the bag mounts slip right off, no removing the long bolts and trying to realign the fender to reinstall them. If you're interested, I can take some pictures of what I'm talking about and post them later today. It's referred to as a "Bag Drop Kit" previously sold by a member now in retirement. You can make your own kit quite easily.
