All, I have owned my 84 GN since it was new. I had the engine rebuilt after it bent a value about 20yrs ago. Since then it has been low on power. I haven't done much to it except keep up the maintenance and drive it occasionally.
I'm in the Dallas/Rockwall area but could make it to Huston area if needed to get some expert option on what the car needs. Do you know anyone in Dallas/Rockwall area? If not I might join your tuning session.