new tube..still leaking

[OakLeaf]

okay then for you mechanic types - what's a good gauge for Presta valve tires? I've always just used the gauge on the pump.

I know not to trust anything but BluePoint (Snap-On) on my motorcycle tires - and to get that gauge calibrated by the race tire guys every few years. What level of accuracy do I need on my bicycle tire gauge, and where do I find it? (And how much air do you typically lose checking high-pressure tires, if your technique is very good which mine isn't always ?)

ETA: another thing I've heard from several people in the last year is that 90 lbs is plenty for a lighter rider even if the tires are rated for more. Touch wood, I've actually never in my life had a pinch flat even when I was 150 lbs. Does the rider's weight affect the minimum tire pressure to prevent pinch flats?