My bonnet didn't have any rust or accident damage, only half a dozen hail stone dents. I recon the hinges have gotten tight over the years and the bonnet been forced down quite a few times causing a slight bow in the bonnet over the years. One of the old hinges was cracked, bent and twisted. Not to mention being dry as a nuns under smile. I usually give door locks, hinges and latches a squirt of spray lube when I do a service, but I don't think the original hinges have had a lube since leaving the assembly line. Yeh I thought my boy rushed it a bit and should have taken a bit more time and we may have gotten away with it, but to late now.