Tension Spring help

[mrknives]

I’ve been running a Bader2 for some time now and have finally lost tension on the arm spring. Is there a good place to find the proper replacement spring and is it as easy as loosening the nut on the arm to pull off the old spring?

I know this is a lot easier than I’m making it too so thanks for any help!

 

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http://www.stephenbader.com/