I contacted Thompson/Center today about my concern with my Hawken not holding a pattern after 25 plus years.I talked with a gunsmith for about 10 minutes.
He was more than helpful and told me how to ship the gun and the process on how they would handle the problem.
I was also told that if a problem did occur with the barrel it would be replaced at no cost, and if I chose the whole gun would be replaced at no cost.
This was more than I expected. Thanks Tree Climber for the info.