Other common rattle points are the headlight retaining rings, pack them out with a bit of electrical insulation tape. The outboard seat belt anchorage bolt can be too long and the side panel flexes and vibrates on the end of the bolt, you will see a witness mark on the panel if this is happening. The cure is to shorten the bolt to the correct length and some anti vibration stick on tiles help prevent the side panel flexing. The rattling steering boss can be cured with a strip of masking tape over the splines before assembling. Make sure the safety latch is fully engaged after and put an anti tamper nut on one of the steering wheel attachment bolts, then leave the wheel permanently on. That works for the earlier Lifeline quick release, not sure if the same problem exists with the later Travens type.
