Twenty minutes is solid. I once spent 12 bucks on a "miracle" cold pill in Mexico and got nothing but a stomach ache and a lesson about reading labels in Spanish. My luck with cheap fixes is so bad that the pharmacist probably saw me coming and charged me extra for the headache. Glad yours actually worked, because my track record says I would've been the one guy who paid 12 bucks to feel worse.

That line about "nobody can prove what you set it to" sounds good in a hangar talk, but I've seen it cut both ways. Ten extra minutes a plane adds up fast, and on a busy day that's the difference between making your slot and pushing a whole line back. The napkin thing is sloppy, sure, but the real fix is a torque log the whole crew fills out together, not one guy playing notary on every fastener. Half the old timers I know got their values second-hand and those planes flew for decades.