A few questions for the T16 experts out there.

[colin jones]

Hi Jon, it might be a bit of a pain but you could remove the tracks and swap sides. If the carrier pulls to the other side then problem answered. If it makes no difference then you can eliminate the track. My money is on the track though. Before you take them off you could mark one link on either side while your carrier is on a flat road surface and mark the road as well then drive your carrier until the track mark goes a full revolution and mark the ground again and repeat 2 or 3 times. Then simply measure each distance and see if there is much discrepancy. Just a process of elimination.
My 2 bobs worth.
Colin.