Thanks for the info theveterens!
I used the setting at: Wireless Networking — What are the recommended settings for 802.11n connectivity? the best I could. If not, I set the option as close as allowed.
On the router side, The Bandwidth option is "20MHz only" or "20MHZ+40MHz Auto". there is no option for "40MHz Only" unless this is a setting in the reg that I would have to update. I don't know enough about the details of the router to begin down that route.
I used inSSIDer and based on the Link Score tried every Channel and extension variation. This is after the previous settings were changed on the wireless Intel® Centrino® Wireless-N 1030. The best I could come up with was Channel 11+7 with a Link Score of 42-45. 802.11n Max Rate 300 Co-Channel: 6-7 networks Overlapping: 8 networks Signal: -47 to -49 dbm
I live in a small 8 apt apartment building with a few houses nearby. so that may explain some of the networks, but there are a lot more based on what inSSIDer is saying.
After all that, the max I can get is 117Mbps with slight flux down to 58-71Mbps.
I really wish I could get better performance out of my setup. I don't know that there is anything else to try. I really appreciate your help and pointing me at the info you did. It made some of this a bit clearer for what is going on at least.
If there is anything else you could think of me trying, please let me know.