The other day, when I'd been travelling some distance, on pulling off from a standstill the 'box stayed in low gear until about 3500 revs, despite relatively modest boot applied - sounded like it was in first (switch was in S mode at the time, so it would've used 1st). Checked the fluid level which looked a tad low, so gave it a bit more. Today (with it in E mode) it was fine going to town (~10 miles) and around town, yet coming home it stayed in 2nd all the way, regardless of throttle or road speed. Looking at it the cable is still attached to the throttle linkage at the engine end, an pulling the cable it feels like it's attached at the other end as well (besides, if it was broken or detached, it'd have the opposite effect of changing up at minimum revs). So... any clues?