I’m not the most dexterous when it comes to fiddly jobs so my new arrival (which I love) has posed me a bit of a problem. It’s a chronoswiss and it has screwed bars. The screwed head seems to be on both sides. My question is do you have to use 2 screwdrivers (with one locked in position) or is there a special tool that people use to do this? Pretty worried about scratching the lugs to bits (or worse chewing the screw heads) trying to get this off