Problem about the joint of two objects

[1128nakkojelly]

Hi there, I met a problem while attach one Obi Softbody object to a normal object.


As the picture showing above, the white part is a softbody, and the gray part is a normal object.


My purpose is to link them together with no movement or mismatch, and it now does not work well.




The following video is a screenshot of it, and I attach my parameters setting below.


Please could you kindly help me figure this problem? Thanks a lot.




Avoiding video post failed, paste the link here: https://www.facebook.com/100080982352505/videos/3155701804694430/