I posted recently for some info regarding spacers to install a 7-speed freewheel on a campy hub a friend gave me. It's all going onto my '83 Miyata 1000. The 7-speed freewheel turned out to be a cassette I need to return to Nashbar. In the meantime, I stopped at an LBS where they threw on a cheap 6-speed freewheel with no spacers (I believe). It's a really tight squeeze mounting the wheel, I'm guessing it's because the hub is 126mm and my spacing is 120mm.
While installing the new wheel, I also cleaned up and installed a Suntour V-GT Luxe long cage rear derailleur. I can't shift into the largest cog, and can just barely squeeze into the second. The limit stop isn't interfering, and the cable seems stretched properly. I can tell that the derailleur simply doesn't move any further. It certainly should reach all the gears, I believe. So, I'm guessing something is up with the hub and the freewheel. I'm very hazy on the spacing, or no spacing, needed.
Hopefully, with some experience, the pictures show something about the setup that's wrong.