180mm to 203mm rotors. Bought the shimano adapter for 203mm but the rotor won't fit into the caliper. Seems like I need even more of a gap to get the rotor to
180mm direct mount forks and frames for 203mm disc brake rotor | SHIMANO BIKE-EU
Amazon.com : Shimano Unisex's SMMA90F203PPM Bike Parts, Other, One Size : Sports & Outdoors