Because the lc sonic has been dying during the night the last weeks(?), and a swap of the EC100 didn't fix it, I've just swapped in Sebastian's CSAT3A (old style). I just placed a bolt through our cassette mount, that is a bit sketchy, but should hold unless we get strong winds. Also, I didn't figure out an easy way to move the EC150 (as I had done for SH), so the sonic centerline is now higher than the EC150 midpoint by perhaps 5cm.
I started with 3 greens (since it was daytime) and ended with 3 greens, so I guess I did no harm....