Shimano 180mm adapter Clearance

Product Name: Shimano 180mm adapter Clearance
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 Clearance, Shimano Original SM MA Brake ROTOR DISC Adapter 180mm 203mm R180P/S , R203P/S , F180P/P , F203P/P apply RT86 RT81 RT56|Bicycle Brake| - AliExpress Clearance, Shimano Disc Brake Caliper Front Rear Post Mount Adapter PM / IS 180mm New | eBay Clearance, 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 Clearance, Best rear brake for trial riding - Page 2 - Pinkbike Forum Clearance.