Especially we loyal long-term customers of GSX Level 2 for FSX and P3D have been waiting for the water/lavatory service feature for many years. It has been planned and provided for in the "customize aircraft" options since ever, but has never been implemented.
And now it is only added to the GSX Pro version for MSFS. This is very sad for us and a little bit disappointing...
Please consider whether the feature can also be implemented for the older versions.
Never giving up hope, kind regards
HardyZ