First of all, allow me to thank you for GRT.
this is an absolutely amazing tool, and I have been using this tool extensively for the last couple of months to develop loads for myself and some friends.
I have also recommended this tool to various of my friends and they all love the tool.
I feel however that if the forum would be in English there will be a lot more people contributing to the tool, as well as a lot more feedback on additional powders and user experiences.
there are also extensive discussions of GRT in some South African forums.