Shimano 180 adapter clearance

Product Name: Shimano 180 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, Shimano80mm Is Disc Brake Adaptor | Jenson USA clearance, Fox 36 Shimano XT 203mm rotor installation with post to post adapter - Pinkbike Forum 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.