What is the best way to cut down a hammer spring?

[hassiman]

Hi,
I have purchased an 11 pound hammer spring for my HK P2000sk to lighten the trigger pull a bit. I was only able to find an 11 pound hammer spring for an HK P2000 whose spring is longer.
I will need to cut the new spring to the same length as the stock spring.
What is the best tool for the job?

Thanks!

[Jason M]

Turn the existing spring down .001 -.002 instead of making it shorter?

[JCN]

DREMEL!