Now I'm not condoning this, but... I stripped the plastic off a large jumper and using a small table-mounted vice, I squeezed the jumper by about 0.5 mm. I could then put the jumper on the drive snugly and secured it with a really tiny blob of silicone sealant. It's performed perfectly for three months. I checked it recently and it hasn't budged a nanometre.

The only reason I did this was because it was 2230, I had an empeg in pieces, I had to go out and couldn't bear a silent car!