I cleaned a Kern Miniature 400 day clock that I purchased not working. After assembling with the suggested suspension spring assembly from the Horolvar book plate #1340e I found it runs very slow and occasionally the escapement flutters. I have tried repositioning the fork with no change other than it appears the flutter ceases but the clock still runs slow (compared to my other 400 day clocks). The second issue is that when I attach the minute hand the movement stops. When I cleaned the clock the main spring looked good so I suspect the suspension spring assembly to be the problem. Hopefully no one fooled with the escapement anchor palates, however I don't see any obvious signs of that occurring. Any suggestions?
Steve