LRM

I have a class 15 clone which I love, but I am having an issue. When winding a bobbin, the thread will jump out of the little tension disc below the bobbin winder. Some of my threads come on tall spools - is this part of the problem? I see that the tension disc can be moved side to side. Should I move it further away from the spool? Or should I hold the thread with my fingers as it winds?? This machine has a stitch - for both straight stitching and FMQ. But the bobbin thread tension will suddenly go problematic and I think this happens because the bobbin thread is not winding with even tension because it jumps out of the tension disc. I have just been stopping and moving the thread back into the disc and then continuing with winding the bobbin. What do you all suggest? Thanks!