I believe that a good reason to change the oils more often than FB Group man ( or women ) is that having a look at the drained oil lets you know if there are issues with the bike.
Wow never seen that before! You can put the bleed nipple / banjo bolt from an Evo on to bleed. Th nipple may interfere with the exhaust. It would be interesting to see the inner workings of this. Thanks for sharing this .
Gently pry off the knob used to turn on and off the fuel from the long range tank. You will then be able to see what you need to do. If you require a new petcock the part number is 27.81083.000
Find an AJP or Beta (grimeca) front caliper this will bolt on with very few issues.
On the rear , I believe that there is a retrofit assembly available, I do not remember where I have seen it on the internet.
Good luck.