Thank you - this helps me a lot. I just ordered the exact same tool listed on screwfix for 13€ from Amazon.
I will add PVC tape around it when I bend it. I shortly considered using the vice - but I wasn't really up to for the "heart in the month moment" that Richard suggested.
As I made a few modifications to my car (EZ Powersteering mounted in a way that the steering wheel is almost exactly parallel to the dashboard) - I also found out that I can mount the stalk with the plastic notch just in front of the column. While this is only about a centimeter closer to the steering wheel - it already helps with the clearance.
If I can get hands on a pair of Mini stalks that have a different angle (like on the picture from TBM) - I will also give this is try.
Thankyou all for the quick feedback - this is always helpful. Knowing that others have went through similar issues makes problems in the garage more bearable

Tim