Mid Drive is loose

[Blimpman]

Help please...
I installed a mid drive and twice now the motor has become loose at the crank. I tightened it up mid summer and thought I really had it tight but it is loose again. The nut under the lock-nut cover is what comes loose.
Question: which position should the drive be ... up against the frame or the opposite position down till it touches the crank housing?

Thanks....

 

[tomjasz]

BBSxx? If yes then properly torque and use blue Loctite. Or a Stabilizer bar or a Lekkie One Nut lock ring.

 

[Blimpman]

Thank you, I will purchase the Lekkie One nut