Varying spring rates on a tubular lock

[tpurtan112]

Hey guys,

I'm having a bit of tough time figuring out a very old (late 80's maybe?) 7-pin lock.

The pick I'm using is good, I've picked dozens of different practice locks with it over the years, but this one is a real PITA.

Using a diamond, I was able to test the tensions on each pin and realized that some have different spring rates. I've heard of tubular's that have various spring rates, but never encountered one.

Any advice on approaching this? I have about 5 hours on this one lock and it's bugging me like crazy! Worse comes to worse I'll do each pin individually, but I'd really rather not.

[Legion303]

There is more information on this in Advanced, where tubular lock discussion belongs.

-steve