Try listening again to the clock about four minutes after you set it going (if it runs for five). If it is even slightly uneven, try leaning the clock case to one side or the other to get it as even as possible. You are trying to get the clock at the EXACT angle it was in your old home.
The clock would have been much more forgiving when first put together (or repaired) but they get, literally, set in their ways. The only alternative after this is to have the clock overhauled, paying particular attention to the pallets.
Robert Loomes www.clockrepairer.co.uk, July 2008