This is a bit of a late response, my apologies. I have been travelling abroad for some time and have just got back to WGT recently. The calculator had an issue with people not being able to download it. I Have decided to release a more complete version of the calculator that is user friendly and includes a lot of other functions, like crosswind aim and some other tid-bits. I will release it in this thread when it is polished a bit more (likely 1-2 weeks)