Ender 3 spring stiffener

update 4/10/2020: As I mentioned in the comments I have had to relevel my bed, but I got pretty close to a months use out of this without releveling my bed.

Someone asked for more tension for a cr10, so I uploaded two new (and untested) versions of these. One is 3mm and the other is 4mm of tension. The one I am using, and the one that was originally uploaded is 2mm of tension.
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update 3/22/2020: I have been using these since before I posted them on thingiverse and as close to non stop as most of us run our printers. I have yet had to relevel the bed. I may not have put a lot of thought into how much tension was best, but this has been perfect as far as I can tell. This has been the best printed upgrade I have made to my printer.

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update 3/10/2