Yes, not the easiest to flush, and having that large reservoir of a collector doesn't help. But I wouldn't like to be without my 51s (both vac and aero) or my 61s (all capillaries) so I've decided to compromise.
I put the inks that I'm likely to use for a long time in them, taking extra care with the inks for the 61s (although so far, touch wood, I've had no issues with the capillary fillers) and have resurrected my 45s from my school days to assist in widening my experience of inks other than blue.
Of course, this has somehow resulted in the 45s multiplying with 7 purchased in the last couple of weeks.
Some years back some members adapted salad spinners to spin the ink out to clean the ink out.
Pinned post by Ron Zorn in repair q&a forum.
Edited by pajaro, 14 May 2020 - 04:52.