Hi guys and gals whatsup? I'm having a problem with a 2pseed transmission i bought. I have a nitro RS4 2 and its belt driven. I bought the transmission off ebay and the guy i bought it from said it works with botht the RS4 3 and the RS4 2. The only difference i seen with this transmission and the one only made for the RS4 2 is that the gear shaft is shorter on the on i have... Do you know if HPI sells the gear shaft seperate from the whole transmission kit or something. I'm really stumped and the guy hasnt returned my email yet if anyone out there can help me it would be gladly appreciated thank-you. If u need to know anymore just ask me.