A couple of days ago I noticed that Harken used to make a 'spring cup' : a plastic washer with an edge that helps to seat the spring to keep the mainsheet ratchet block upright.
Now it is apparently discontinued.
Did anyone of you use such a spring cup?
I actually have one in my Lightning for the mainsheet ratchet, and I'm pretty sure the same was true for my 505 (which I sold in 1999 so I don't really remember anymore). Like those boats, my Laser also originally had the Harken 019 ratchet, but not that spacer. Neat little thing but not necessary by any means.