ORIGINAL: branded
Just drill through the bolt heads from the side ( assuming you have allen bolts) and thread some safety wire bhetween them.
I'll reiterate. You simply need to drill a hole in the head of the bolt and safety wire it.
Most everyone I know does this.
Here's a link to a thread that discusses the way to do this...... There's really no other way to reliably keep those bolts tight!
http://www.rcuniverse.com/forum/m_27...tm.htm#2743372