FirstFlight
Senior Retro Guru
I think the Lite was only available for a year or two so they are relatively difficult to find. Tubing is Tange Prestige and there are fillet reinforcements at the head tube/top tube, head tube/down tube and on the wishbone stay. Pretty clean bike.
More details @ http://firstflightbikes.com/1991_WTR_Lite.htm
More details @ http://firstflightbikes.com/1991_WTR_Lite.htm