I'm new here as a poster but have been browsing the forums for a while. I bought a Trek 7100 Hybrid something like 5~6 years ago and rode it for a couple of years before moving to a place that I had no safe areas to ride so it ended up in storage.
I've gotten it back out and tuned up and it's in great shape so I've been putting a lot of miles on it. I love riding and I'm also working on losing weight so it's a win/win.
That said it's been raining around here more than I've ever seen it rain so I ordered a set of Bontrager NCS Fenders for the bike. I ran into an issue where it seems like the bolt hole in the part between the chain stays right behind the crank is off-center [towards the right side of the bike]. The fenders fit the tires very well but if I bolt it behind the crank it's extremely close to the tire on one side and about 10~15mm away from it on the other side [I didn't measure, eyeballing it].
When I look at the rim/tire/axle/etc everything looks fine - the wheel is perfectly centered between the seat stays and is straight with the bike. The back brake is centered on the wheel perfectly as well. There does not seem to be any sort of adjustment to the back wheel and I can't 'adjust' this bolt hole behind the crank so I'm not sure what to do.
I did think about getting a wider set of fenders so I would not be so close to rubbing [as the fenders would still do their jobs] but that seems like a bit of a kludge. I did also think about maybe fabricating a bracket or something that goes from one chain stay to the other side that I can bolt the fender through so it's centered but I'm really not sure.
Has anybody else seen this issue and is it common? It seems to me like that threaded hole is in that spot for fenders and it makes no sense for it to be off-center from the wheel.
I did also think about maybe getting some SKS fenders and just drilling the hole out a bit towards the side so I could slide it over but since it's a curved material I'm concerned that doing this would result in the fender cracking/breaking at the bolt hole.
I love this bike but I want to be able to ride it after the rain without getting a line of dirt/water up my back or if I get caught out on the bike when it's raining so I definitely want the fenders on there. I suppose I can live with it being off-center so long as it works but I'd really prefer it to be centered to the tire to get the best use of the fender as well as so it doesn't look like it was installed by a monkey.
Open to all suggestions/advice/criticism and I appreciate you taking the time to read and respond.