Sprink

If you want to try it I suggest a quick ad easy method.
This is what I did at first and then replaced it with a turned aluminium insert instead.

get some 6 mm dowel, cut a piece about 1/2" long.
drill a 2.5 mm hole in each end in the middle.

take the ends of your a sticks off, and the base has a 3mm stud sticking out, screw the open end of the dowel on to here. Now you need a small bit of 3mm stud to put in the other end, and then your normal stick end comes down on to that.

Looks a bit heath robinson but is is a smiple way to extend you existing sticks to your taste. You then decide whether you buy extensions of the required length or get some ali inserts made like mine.

Voila go do it !