I have gradually decreased my dose of Gabapentin to nil, and haven't taken any for months. I was having trouble concentrating and making decisions and since getting off the Gabapentin my thought processes seem to be clearer. The downside is that phantom pain is more noticable but I can live with it.
I had my 4 monthly MRI and CT last week and some nodules in my right lung have increased in size and are suspicious for metastases, so I am waiting to hear from SCGH what my options are. I suspect I will be up for surgery on my right lung now.