I would get a stronger servo if it was me. I use a JR 9001T servo....
http://www.amainhobbies.com/product_...rvo-Metal-Gear This one works well for me
another...
http://www.amainhobbies.com/product_...rvo-Metal-Gear
no really good servo is ever cheap!
1. MBX-6 T8 1900KV, RX8 ON 4S
2. MBX-5T 1520, MMM ON 5S
3. MBX-5 ONROAD CONVERSION 1515, MMM ON 5S
4. MRX-3 ON ROAD CONVERSION 1512, MMM ON 6S
5. TEN T 2650 T8, MMP ON 3S