Hi Tim
Great stuff, it's a pleasure to use.
Niggles are getting very minor now. If you load a new aircraft its name stays as 'New Aircraft' in the drop down at the top of the screen. eg load a PA28 and it does not appear in the drop-down. Then load a C182 and behold the PA28 appears. Hope that makes sense.
May be worth adding "inches" to the CoG box just in case someone thinks litres and centimeters should go together.
Tony