greenhart, apologies didnt see your posts earlier. I will try to answer in order.
1. the correction is not applied to the acceleration, its applied to mean sea level which is where the acc is also applied to predict. How can the correction be of the same magnitude (from GIA link) as the the acc (from wiki link).
2. I provided the link for all my numbers. the calculated and observed levels are from the wikipedia link. thought it was obvious as I included the entire text to go with the numbers.
