I have started commuting with a Cannondale BadBoy rigid and want to fit full mudguards on. It is a CAAD3 frame, the top of the seat stay is one tube only without the usual eyelet for calliper brakes / mudguard fixing. At the bottom the small tube joining across the chainstays ,where the front end of the rear mudguard should clip on, is two inch from the tyre (26x1"😉, would mean bending the mudguard outwards, easy but doesn't seem right. I have tried some SKS 55mm MTB ones but need quite a bit of DIY/BluePeter touch. Any other option?