When I converted over the the Harken track the 1618 track was the choice. Length is 1.5M if memory serves me right. To raise the track a piece of 2" x 1/2" x 60" piece of teak was used. I too had the standing water problem until I drilled a hole in the center through the width of the teak. It still collects garbage but at least the water drains. The problem I have with the set up is the traveler sheet is always getting caught under the car when tacking. You really have to watch what is happennig there. Anyone have thoughts on how to keep this from happening?
Also, when the track was purchased, it shipped with one less square washer for the bolts that was needed. 6 instead of 7? You might want to make sure your supplier can supply you with the extra part to avoid having to fabricate your own.