hi all, tried to search but cannot find any answer. used diff lock at weekend and since then the lever will move left to right and switch light on and off as in neutral position left and right, though it seem as though it is always in high range. the lever will move forward to the low range position but i didnt try to move it far to see if it was actually in low range. is it likely that the linkage is seized in high range and needs freeing off? thanks in advance