I bought a Burlington 21 jewel watch a few years ago and had it serviced. When I got it back it was gaining about 5 seconds a day which was fine. I don't use it very often but would wind it once a month. Over the years it's drifted a bit and was currently running +30 seconds per day. I wound the watch and using the eccentric screw turned it counter clockwise a 1/4 turn, then set the watch and left it dial up over night. This morning I was expecting to see that the movement had gained less than 30 seconds but it had actually gained 40 seconds. I thought this was a right hand screw and turning the screw counter clockwise would slow the movement down not speed it up.