This is my first experience with cassette hubs, and I'm having some derailleur travel issues. The derailleur doesn't seem to want to move far enough in to engage the largest cogs on cassette. The limit screw is set all the way out. I'm certain that its the derailleur, not the shifter, because I moved it by hand before installing the cable and it still wouldn't reach.

The cassette is 8 speed and sits very close to the spokes, leaving a sizable gap between the smallest cog and the stays. Do I just need to move the cassette farther right? Are there spacers for this, or does the wheel need to be redished?

Shifting is friction with a Suntour barcon and derailleur is a Suntour Arx long cage. Thanks in advance.