I received a Gunfighter Mk.III + MCG Ultimate a few days ago, and I must say I'm absolutely delighted!

Within a few days I changed the stock springs for a #40 on each axis, and it works great.
But I wanted to add a little resistance, and I added one more spring. In total #40 + #20 on each axis.
The problem is when I move the grip to the end of the X axis (to the left), the outer spring collides with the gunfighter cover, and the spring is released.

I think the springs are well positioned, but I'm attaching some photos and video to illustrate the problem.
https://www.dropbox.com/s/1bfvvvm64o8wf ... 9.mp4?dl=0
Has anyone else had this problem?
Thanks a lot!