If you are not familiar with online forums, there usually is a search option where you can look for threads/topics specifically dedicated to the car you own. You will usually get better responses in those threads than in the general forum.
Unfortunately there aren't many threads about the HPI E10 on RCTECH.net. Since it is generally considered a drift car, you might get good responses in a drift thread (but I couldn't find one searching on rctech). Hopefully someone is familiar with one of the drift threads or can answer your specific question.
Here is a link to an active forum for E-10 users that you might find helpful. (http://www.rcuniverse.com/forum/m_80...29/key_/tm.htm
EDIT: Here is a drift thread here on RCTECH (The Drift Thread