1 was hobby king, it was mine, I threw away the screws that came with it and replaced it with high quality bolts
They broke
1 was from valley and installed by them
it broke loose also

there is not room for teflon tape
and V G is right the bolts are tapered and can not have a washer behind the bolt

Thread lock was used in all cases
Our conclusion is the bolts worked a little looseafter they became loose it was just a matter of time
a complication is they were all behind spinners so they were not check for looseness after flights

So far seems like I have heard from guys that dont use the adapter
This was over time like weeks or months after intalled

How about you guys that are using the adapter
do yours come loose and break -???