Hi Gerd, I see the generation 5 is now available. I have a few questions: Having a gen 3, you may recall my suggesting a quick wheel change method. Nice to see this evolving. The gen 5 looks to be an improvement over the 4, however I wonder just what adapting a gen 3 to 4 would really do for me, or even moving to a gen 5, as I see a trade-off in time - unless I'm missing something. It does seem wheel changing with a gen 4 adaptor kit or using a gen 5 will be faster than with the gen 3 - but it seems to come at the expense of no longer being able to easily clean the adjustment threaded rod and aluminum adjustment block which I do once a week. From your CAD drawings, it appears the gen 4 & 5 rear black guard plates are fixed given the drawings show screws inserted up through the yellow base plate and held in place with hardware. With the gen 3, true it takes time to remove the six screws, but once the clear plastic guard is off, I can very easily brush the rod while rotating it and I can scrape the caked-on grit off the rear end wall and then brush/vacuum the interior clean. But the new gen 4 & 5 setup appears to continue doing this cleaning, I'd now have to unbolt the 8000 from the stand, place it on its side, and remove the front guard plates top & bottom hardware. If true, how about a gen 6? Would it be possible to attach fixed guide pins on the yellow base, machine L-shaped slots on the bottom lip of each guard plate, and use thumb screws along the top? This way the plate could be easily removed with the 8000 bolted to the work stand. To reinstall, insert the guard plate with the guide pins going into the L, push the plate rearward, insert the thumb screw and tighten. Next question - on the gen 5 & 4, are the thumbscrew(s) passing through the yellow top plate hole(s) and threading into a welded in place nut on the underside of the top yellow plate? Or are the yellow plate's holes no longer through holes (as in the gen 3) but are now tapped? I'm asking for if the holes are now tapped, that would be an easy modification to make to a gen 3 by drilling and tapping a new hole - and then only one thumb screw would need to be removed with a future gen3-to-5 upgrade kit. Presuming the difference in the gen 4 upgrade kit to a gen 5 is just the vacuum dust collector. TIA for reading and answering.