My main suggestion would be to make sure you have a good hex key that is a tight fit and not rounded or worn so that the cap screws do not get damaged, if the cap screws get rounded out you will likely have to use an extractor to get them out and then replace them with new screws. Once you have a hex key with a tight fit I would suggest tapping with a hammer or possibly using a small cordless impact tool with the correct hex bit.
My main suggestion would be to make sure you have a good hex key that is a tight fit and not rounded or worn so that the cap screws do not get damaged, if the cap screws get rounded out you will likely have to use an extractor to get them out and then replace them with new screws. Once you have a hex key with a tight fit I would suggest tapping with a hammer or possibly using a small cordless impact tool with the correct hex bit.