[Joe K]

The "fingers" can be adjusted. I used an ice pick pushed down into where the GAV needle fits to bend slightly the fingers and the "c-clip."

Alternatively you can remove the c-clip and try that. Or replace the c-clip with a small o-ring.

Careful with expanding the fingers - it's possible to "break" one of the fingers off - although in my case it didn't affect the function, and actually served to make the GAV needle turn easier. (I haven't repaired/replaced it yet as there is no need.)

Joe K