These are the fiddly bits that are involved with the Hydraulic Engine Guzzi.
I had to make sure the adjusters were set right after the "dealer" morons screwed it up. The had set it for a solid lifter arrangement, which caused quite a bit of clatter.
It seems OK now at +7000mi. Its not the most quiet engine I've ever had, but I suppose there's nothing to complain about. I think I'm just paranoid every time I hear a little noise out of it.