What are the black rubber-thingies called on the front forks immediately above and below the tube between the triple trees where the headlight brackets mount? Mine are in desperate need of replacement because they've turned to mush and are extremely gummy. How hard are they to come by and how hard are they to replace? Is this a do-it-yourself job, or is a mechanic needed to install them? My lower fork oil seals are fine, but these seals/gaskets/dampers/whatever gave way after strapping the bike down to a trailer with ratchet tie-down straps when I transported the bike home from Texas to Louisiana. Please excuse my ignorance, but any help would be appreciated.