Loose gear shifter

Springoflife, if you are fairly mechanically inclined and have a fair amount of patience then I think you'll be fine tackling this. You'll need mechanical ability to remove the interior panels and patience so as to not hurry and break clip(s) which will lead to rattles. Follow the procedure as shown in the video to disassemble and reassemble the shifter. The highest risk of this procedure is the risk of drilling too deep into the plastic shifter body, so drill carefully and pull back on the drill while drilling to prevent the bit from plunging too fast. If possible work your way up from smaller bits to larger in increments of 1/64" because this will prevent the drill from plunging too fast. Measure the hole depth so you can install the new tube at a height such that the spring plunger is at the original height. If the spring plunger is too low then you'll lose the nice detent feel of shifting. If it's too high then it'll be more difficult to shift because the spring will be too compressed. You want to keep it at the same height (or very close to the original height). If you look at my post, I used either a grinding bit or some sandpaper on a drill bit to open up the hole so I could SLIP the tube in and GLUE the tube in place rather than TAP it in. Others have tapped it in place but I was concerned that the plastic might split. As I type this, my glued-in tube is still holding strong and I don't anticipate having any problems with it in the future. For tools, I'm going off memory so I'll probably miss something but you'll mostly need a 10mm socket and ratchet (1/4" drive ratchet is very handy), a small phillips screwdriver to remove a few clips and a flathead screwdriver to remove the push-on nuts which are on the shifter assembly bolts. Also a drill with a few drill bits and some five or 10 minute epoxy. The SS tube can be purchased locally at a hardware store or just get it off Amazon. I scuffed up the OD of my tube to give the epoxy a good rough surface to bond with.