Lower Limit keeps changing

[patcg60]

I have 13 rollertrol shade/ motors.  They are a mix of older and newer motors.  The problem I am having is the lower limit keeps changing on several of them.  On some it gets longer and on others it gets shorter.   Has anyone experienced this?
Thanks.

[admin]

Hi, the first thing to check is if you have a smooth walled tube. If you have these, please understand that the drive adapter could be slipping. Please remove the motor and add some vinyl tape to the drive adapter to make it stick to the tube better.

Alternatively you can also add a setscrew:

https://RollerTrol.com/how-to-retrofit-motors-to-blinds-and-shade-tubing

Regards, Adrian