I have had the same problems on my Range Rover (they all do it) and have found that isolating the area and spraying a small amount of silicone lubricant seems to cure the problem. For more difficult areas, a minor amount of disassembly and the application of some graphite lubricant has also worked well. Felt pads will do the trick as will the thicker weather strip tape for areas which need more padding between surfaces. Now my RR is squeak free.

TC

99 ML 320
98 RR 4.0 SE