Or conversely, would someone with very little wrench experience be able to do it easily and reliably?

 

Very easy to do yourself. To change the pill, all you need is a small screwdriver, a small pair of pliers and needle nose plier. Taking maybe 15-30 mins max with no experience.

The tune is very simple. Just a few buttons on a laptop

 

$120 for used Tatrix cable, $40 boostpill. Price of your smile after loading GST Basemap is priceless.

 

i think the hardest part is trying to get the hose off from the back, it likes to stay stuck.

 

^long needlenose pliers and 'twist'