No personal experience with the Tracker clutch - however - I've a fair bit with cable operated clutches on other vehicles. I can't see the length of the casing as causing the problem - cable operated device rely on the difference in length between the inner and the outer - so I see that as an either work/not work situation.
On a different note - and this really relates more to your other post - I have had clutch cables cause problems like you describe, with the pressure required to operate the clutch gradually becoming heavier - it started with my daughter complaining about how heavy the clutch was and when I realised it was unusually heavy, I put a new clutch in, all genuine Suzuki parts, and the problem went away for about three days - lubing the cable (which I had not replaced) resolved it for awhile, and I would have relube the cable repeatedly, so I replaced it.
You may want to check the ground strap that runs from the bellhousing to the battery negative - if it's not there the starter grounds through the clutch cable and that can cause it to overheat and melt the platic lining on the casing.
