Help tracking actions for non-current projects
i've been using GTD for a couple years and one problem i have is tracking actions for non-current projects.
for example, i have a "fix closet door in guest bedroom" project. the next action was to figure out what hardware i needed and i determined i needed a 2 inch screw. so i added "buy 2 inch screw at hardware store" to my errands list.
then some things happened and now this project isn't something i have bandwidth to focus on in the next couple of weeks. i like to only have things on my "next actions" list that i really want to do this week. otherwise i have too many things on it and it becomes overwhelming. i like to limit myself to 20 current actions per context.
so i want to remove this from my errands list but have already done the thinking to determine what the next action is for my "fix closet" project. i don't want to lose the fact that i know what size screw i need. but i may not want to work on this project for several months.
should i move the "buy 2 inch screw" to a "future errands" list? how can i keep this action around without having to look at it every day on my actions list?
how do you handle situations like this? am i implementing GTD in the wrong way?