Welcome to the LHT club, Mentor58. I went from a Giant OCR tour that didnt fit quite right either. My LHT is a 60cm and is like night and day compared to the giant. I'm sure you will be quite happy with your selection! Just make sure you use a framesaver before assembly (easier to apply).
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'94 Schwinn Moab 3
'03 Giant OCR Touring
'06 Surly LHT
'01 Giant Yukon
I choose the way to go, but the road won't set me free