Can't figure ticking sound out, as everyone so far that has it, finds it goes away
I think I have one person convinced to send me his pump back, so I can see for myself.
Been able to reproduce this if I place the shaft out of position, and the sound is simply the impeller slowly moving back and forth in the bearings, which is fine.
The idea I have is maybe weak magnets, causing same effect, but this will show up in motor load testing.
Either way, we have increased the cap chamber size to hopefully remove this issue in the ABS injected cap's, which allow more impeller thrust movement.
**This is no wear issue, if the impeller is moving back and forth as suggested, was designed to do so. It is only that any noise in a very quite pump is noticable.