[S2Houston]

Hello:
I recently purchased a 1984 S2 10.3 and the tracks for the sliding "roof" should be replaced. The TX sun has made the plastic brittle and the track is cracked in several places. Does anyone have an idea where I could purchase replacement tracks? Are they standard parts used by S2/ Tiara and available through their suppliers? I plan to contact Tiara as well for leads but any help would be appreciated.