I would like to pass along my very favorable experience with Scott Blair (airguntunes.com) who recently did his magic on my two HW55 rifles. He was recommended to me as a HW55 guru and he certainly is that. Both were all leather seal original 55s each of which had separate issues. Both are now shooting incredibly well; my most accurate iron sighted rifles by far. His turnaround is very fast and lets you know what he recommends before he begins. His pricing is very fair given what I sent him and what came back to me! Thumbs up.