Fuel filter still needs to be changed. It'* sitting on the workbench waiting. I will follow advice and replace the bosch platnum plugs with another brand. I should have known
On another note, the car tripped the MIL so I took it and had the codes read. 2 codes were EGR related and 1 was the VSS. Did a little reading and it seems that both EGR and VSS problems can cause surging. It seems the VSS controls xmission line pressure, shift points, and possibly lockup solenoid engagement. This would also explain why it seems that my shift rpm under light acceleration is high. This is my first Bonneville so I didn't know what was characteristic or a potential problem.
Next steps -
1. Replace plugs with suggested type
2. Clean mass air meter, EGR, TB. Anyone with links for pics and/or instructions?
3. Replace VSS. Does anyone have part numbers for my application? I have done quite a bit of shopping on ebay for new/unboxed items such as this at quite a cost savings. I would like to have OEM and/or replacement part numbers on hand so I don't order the wrong part.
Thanks for all the information and suggestions. I will update this thread with the results of my work for others' future reference.