Helios 44M-4 Nikon Infinity Focus mod parts

About two and a half years ago I've purchased a Helios 44M-4 for my Nikon D3200 body. It was my first prime, cheap, but with beautifuly interesting swirly bokeh. Yet the main flaw was that the lens cannot focus to infinity on a Nikon body.

I've started modding the lens back then, by replacing the M42 screw mount with a Nikon F adapter. I could get about 2 meters plus focus distance but it wasn't infinity.
I also had to create a plastic part that kept pressed the aperture enable lever inside