Nice videos on the adjustment there. I subscribed to EricTheCarGuy. Appears to be a manageable job on a passenger car, maybe not so much on an Odyssey. I would be willing to tackle it, but I would allow all day for it. I see the mechanism with the nut and slotted screw hasn't changed since my 86 Accord, on which I adjusted the valves every 15K per the service manual.