Mounting RCM battery trays

[RC-Monster Mike]

I drill the tray with a 1/8" drill bit and then hand thread the M4 screw into this hole - makes for a nice, tight grip that won't back out. The trays include 4 screws - if you use all 4 in this manner, you will break something else before you pull the screws out of the tray - I promise. :)
I ran my Losi 8T a full season with only one M4 and one M3 screw holding the tray down - didn't realize it until I took it apart! I am not recommending this mind you, but rest assured that 4 M4 screws will hold it securely. :)