I have just tried out XCSoar on a Vertica V2 connected to a V7.
Most things seem to be fine and changing MC on one changes the other.
However when I change the ballast setting on the V7 XCSoar jumps to a maximum setting which does not correspond to the maximum set in the V7. Also vice versa when I change it using XCSoar the values do not correspond. I have checked that the units are set the same kg or litres. It would be neat to use the dump button on XCSoar and have the V7 get the same value.
I suspect that XCSoar is not talking the same units as the V7.

Has any one comes across this before and found a solution?