Originally posted by pawelgawel
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Does anyone have a picture of the Original Manual trans torsion spring?
Reading the guide, there seems to be a difference in shape between the Mcmaster spring and the OEM one (pictures from post are gone):
Short Leg of the Torsion Spring
Here is what the guides get wrong. Notice in the Original BMW manual spring that the short leg is 90 degrees from the direction of the long leg. You have to unwind this side of the spring 45 degrees to match this angle. This is a bit difficult to do and will require a vice. Clamp the spring in the vice by the short leg. Take a long 3/8 extension and pass it through the spring inner diameter. Use the extension as a handle to pull up the spring to unwind 45 degrees out. You will have to straighten that leg out once done as it will still have some of wound arc to it. You are matching the 7 windings that the original BMW spring has by doing this. You are not adding any more or less pressure than the OE part. You are modifying the McMaster part to match it.
After you have corrected the short leg, you can visualize where to cut it and then add the small bend that the original had. Eyeball this, it isn't super critical.

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