Re the damper blades fitting. If you do detect front/back movement then it can be adjusted away by adjusting the locating lugs at the chassis. Check these lugs for wear as grooves can form. Cheap to replace with new anyway. Keep the area where the blades enter the chassis end greased to ensure good movement in and out with no unwanted movement. The blades are not expensive to replace either.
When I get the chance I'll have a good look at the dampers. I quickly expected them the other day visually, and could see grease on the top but not sure about the bottom.
