The easy way to get around this is with tackle trays. Put the screws and small parts from each step in one compartment in the tackle tray. When you move to the next step, those parts go in the next section. If you have to stop, mid repair, just close the lid, no parts get lost or mixed up. When you start to rebuild, all the screws and small parts for each step are nicely sorted. If you have parts left kn a compartment, you know you skipped a step.What always gets me is when you take out those 11tybillion screws that are all different sizes and length and getting them back to the right location.