Pine Mountain is a different bike, are you describing the color of your Hardrock? I believe I was part of the mystery mentioned by CassidyAce above. My dark green HardrockFS (94ish?) came with a 26.3 mm post when I bought it back in 94 but I don't know if it's original. As you can see from the scoring on the post, it has always been a tight fitThanks makes sense the model is a green Pine Mountain
You can buy shims but 26.0 to 26.3 is an unusual size and you'll be lucky to find one for those precise measurements. However, you can use something like this: https://www.ebay.co.uk/itm/22578806...XQ%3D|ampid:PL_CLK|clp:4429486&epid=622832983. They are slightly (but only slightly) more elegant than a butchered Coke can.Yes the colour is green. I have ordered a 26.0 post so may need a shim. Can you buy these or is it cutting up a coke can? Colin