I recently got a new Head from a highly respected builder. I had him custom make me a tweed head cab because I wanted to match it with my favorite 2x12 Kendrick cab.(Hence my name......I love me some tweed!) The cab is about 20 yrs old and looked aged even back then. Extremely well made . I love the pair. KILLER. But I was thinking of aging the head cab in the near future to better match. Ive read alot about shlack. Was just wondering if anyone else developed a better or different approach?