If you slip the bobbin onto the shaft and it sort of spins on there (not enough friction) you can spread the shaft with a screw driver. Mine loosened up on me after winding a few bobbins so I had to spread my a bit. Works good now.
Is that you problem or does it appear to be something else?
Always learning...and sharing what I've learned.
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.