Replacing Chainplates on an Alberg 30

We replaced the old chainplates on this 1968 Alberg 30 using 316 stainless flat bar sized 1/4" x 1 1/2" and drilled for 3/8" bolts and 1/2" clevis pins. We then rounded the tops with a grinder and polished in our shop. The bulkheads and knees were strengthened as well. The boat will have 1/4" 316 1x19 stainless standing rigging with swaged upper ends and sta-lok lower ends. I generally no longer use polysulfide sealant such as Lifecaulk to bed the chain plates since I found it tends to lose its bond after a couple years. instead I pack the gap in chain plate to deck hole with butyl tape that gets compressed in place under the stainless caps and have yet to get a leak this way.