I have just reread my post here and its sounds all wrong - I dont mean to araldite the bonnet clips on ( how bad would that be ! )

I mean the roundheaded unslotted stainless bolts. Cut the heads off and stick them on over the leftover Dzus holes as a quick fix. Even then , if happy with the job I would probably get rid of the Dzus fastener completely and take the bolts straight through and retain on the inside - at this stage why not ?