Where the post goes into the needle there is a small plastic ring. Take a couple of tiny screwdrivers and gently push the ring down towards the face of the gauge. It's easy to tell when you get it on the tach because when you rotate the needle it should glide back to zero like has a bit of weight to it. It's harder to tell on the fuel and temp because they always have some resistance. When I scraped the film from the back of the face it took me several trys before getting them all to work properly. However, I didn't completely remove the needles. It seems that the WRX is particularly sensitive to removing the needles. Good luck.