I used super strong velcro to mount my MMM, only trouble is when I went to remove it the bottom half of the esc case stayed on the truck... :/
Funny you said that because the same thing happened to mine when I shrink-wrapped the rx wire.
Castle Neu 1520 on 6S LiPo Powered Gmaxx (Nitro Killer)
Predator with OS .21TM
Supermaxx with Mach .26
Revo with OS .18TZ
Kyosho ST-RR Conversion
Ofna CR with Tekin ESC/Motor (2)