Replacement Bushing for Flux 3d Printer

As I was having trouble with the existing bushings on the Flux 3d printer, I made these replacements with the Flux itself.
Problem is described more in depth by others here:
http://forum.flux3dp.com/t/something-wrong-with-first-layer/1448

Getting them to work is a lot of trickery and might void warranty, so please use at your own risk and be prepared for trial and error, but I was tired of waiting for a solution and wanted the darn machine to work better. And now my printer is working a lot better.
Not as good as it can I think, but at least I can print again.

Make sure they are not too loose after printing (or you will the same issue as with the original ones), this also depends on print(er) quality.
If too loose, scale the file in X-Y by 99% or so, until you have one that fits tightly on 8mm rod.
I then slightly sanded the outside of the new bushings until they were nice and smooth and fit inside the existing housing.

For a tight yet smooth fit on the 8mm rod:
Take an