Carriage remix for 15mm magnet (0.5mm tolerance in diameter) with buttons

Got no microswitch that looks even remotely similar. Using buttons instead. Allso 15mm magnets.
My current printer has awesome tolerances, so the only effector that could take in 15mm magnets has extra half millimeter in a holder diameter to actually fit magnets.
Allso the center-hole is bigger so it can fit the radiator with wiers.

please note that original braket-mounted things no longer work as they have no space to be mounted (magnets are too big)