I have just received my new hpi F4.6 engine for my t-maxx, but i am really worried that the bevelgears inside the differential cups will not last, but unfortunetly i dontknow from where i can getsteel ones, an upgrade or something. Icant find them anywhere. Does anyone of u know an onlineshop that i can orderthem, or even a manufacturer? Pls can someone help me?