Wow, so glad I went down this rabbit hole...after even FURTHER investigation, three magnets popped off with ease. I'll be removing all, cleaning and re-attaching, following the guides and advice in other posts (and oldbaldsob's here, thanks again!). It seems pretty straightforward, and will post back with results in case anyone else is either attempting or deciding if they should (they should!).
Another question, when removing the cover, the gear on the bottom left that seems to attach the magnet basket to the other gears fell out, and the basket rotated slightly, is there any concern about it rotating and affecting the position of anything inside the engine? Thinking along the lines of a timing belt replacement on a car, gotta keep everything in the same position.