[nitrostarter]

Since you guys didn't know the answer, I emailed Mike. He helped and then directed me to FLM. After some quick measurements, the problem was resolved. I received a FLM26515 kit, it contain a correct shaft and a shaft for the Slash kit. FLM quickly apologized for the inconvenience and shipped a correct shaft out.

I would like to thank both Mike and FLM for their help and great customer support! Thats what makes this hobby great!