Who has my original chip??

Hello.
It's a strange question, but maybe it's worth something.
Last year, I sold a copied tuning chip for a 4.2 to someone from this forum. My mail addresses were completely deleted by several computer crashes, unfortunately also those of the buyer. When I opened my control unit yesterday I realized that I still have the tuning chip inside and then I sent the original chip. I used another ECU at that time, so I didn't use my mistake at all, nor did the buyer report back as agreed, because I had agreed with him that he should pay only after he tried the chip. Shortly after that, I lost my e-mail addresses and hope that the buyer will read this now. Please I absolutely need the original chip back, as chip and ECU software must fit together and I have to use this ECU now!
One more thing, maybe one of you can tell me what it looks like with you guys with the crossbars, because I'm not so sure. Let me ask you this question:
Imagine you have the front! Cross handlebars in installation position!! in your hand and look at it from above. In which position is the guide joint now?? When you see the crossbar as an axis, the joint is VOR!!! the axis in the direction of travel or the axis in the direction of travel? With me it fits in both positions and the illustration in the Rep. guide only suggests the installation position and writes: The decapitation , resp. the noses on the guide joint shall be in the direction of travel. Unfortunately, there is no nose and the decapitating can unfortunately also be interpreted and incorporated in the other way around. Does anyone have a Digicam and can they put it in here?
Thank you in advance, Martin from Berlin