Simplify you pit bags. Every single thing I need to build my car from scratch and some spare parts, radio, fuel bottle, etc, fit into one large carboard box that I slide into an old Ofna purple bag.
Then as long as I have my car(s) a jug of Byrons 25 and that purple bag I've got everything I need.
Even at home the grape flavored carry bag never gets taken apart, tool comes out of bag, tool goes back in, not on bench, not in ear.
Allways pit for a least one person on race day. Thats a great way to ensure you'll have a little help when you need it. But take it seriously, pit guys that wonder off suck.
There is allways one racer that deosn't have anyone to refill his car at the start of his qualifier, or someone to hold his car at the start of the main, or a pitguy.
DON'T LET THAT HAPPEN, ITS KILLING NITRO!