Helios 44M-4 Nikon Infinity Focus mod parts

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About three years ago, I bought a Helios 44M-4 for my Nikon D3200. It was my first prime lens and cost very little money, but had an intriguing swirly bokeh. However, its main flaw was that it couldn't focus at infinity on my Nikon body. I started modifying the lens then by replacing the M42 screw mount with a Nikon F adapter. This allowed me to get about 2 meters plus focus distance, but not quite infinity. I also had to create a plastic part to keep pressed the aperture enable lever inside the lens. It was cut out from a CD case and worked perfectly. To achieve infinity focus, I had to unscrew the rear lens part (closest to the sensor) by 0.9mm, so that the focus plane aligned with the sensor. Now that I have my 3D printer, creating parts is much easier than before. I've measured everything carefully, and modelled the necessary parts to convert my Helios to a lens that focuses at infinity on a Nikon body. You can see in the attached pictures where you need to place the different parts. The last image shows a quick test snapshot with the lens focused at infinity. I didn't attach disassemble images or video because you can find many of those online. I ordered an aluminium Nikon adapter from eBay for about $1 (M42 to Nikon F adapter). Unfortunately, I'm not sure if it works with other Helios 44M models. I hope this design is useful to you. Sorry about my poor English.