Thanks everyone for your replies on this topic! My 7 had been sitting for 10 years when I got it and lots of lingering issues so now my goal is to get the car to a much higher level cosmetically and functionally so I can enjoy it regularly. I will probably start a new thread with more details about the car soon.
I have been curious about those rivet removal tools which seems like a way to easily repeat the precise drilling of the rivet head to minimize collateral damage.. Probably a worthwhile investment!
Also, I began watching the Lotus Show series on youtube, it is really great! I wonder if the owner is a forum member here.
It really helps to understand about the varied experiences with rebuilding these cars. Thank you all again!