Advice on Lease contract "error", dealer asking to resign 3 weeks later

As hersey said, The MF was 0.00262 but marked up to the maximum, 0.00302. The residual was 47% for 48/7.5k, I technically didn’t wait, I just harasses dealers for the first two weeks on finding a cancellation at MSRP or marked up a little bit. Found this at MSRP + $400 accessory + MF mark up.