I been on the same search and come to realize it was just best to be open to a KM 5b clone. From what I understand, the King Motor 5b is solid and better of the clones in all ways especially durability. They do offer and sell as roller! $350-ish That is a deal! Especially for someone like myself looking to throw all out not needed or wanted and making it more MY 5b. That is what I am going to do here soon. Just recd my LOSI 5T 2.0 today...I will just say, O....M....G! Yaaaas!