If it runs dial up and not dial down, or even if there is a large difference in rate in these two positions, you may have something wrong with one of the pivots and/or jewels. The faster rate is usually the bent or damaged side down. The exception if the pivot is mushroomed, then it may show when it is the top pivot.
Other things can stop a watch dial up or dial down. For example the hairspring may touch the center wheel or balance cock or balance arm in one of the dial positions and not the other. If either the balance staff or lever staff has too much endshake, the match between the two may be off in one position. Especially on a single roller, a bent safety dart can also cause dial up or dial down problems.
Here are 20 dial up-down problems
There are about 20 sources of such errors
1. dirt or thick oil in one or both balance jewels
2. Burred or marred balance pivot(s)
3. End of one balance pivot flat or rough and the other polished and rounded.
4. End of both pivots polished, but not the same shape
5. Pivot bent
6. Hairspring rubbing balance arm or stud. (That is my vote)
7. Hairspring not flat or level
8. Overcoil rubbing under balance cock (This is also my vote)
9. Over coil rubbing center wheel.
10. Balance pivots fitted too close in jewels
11. One pivot having excessive side shake and the opposite fit well.
12. Escape or pallet pivots bent or damaged
13. Balance end stone pitted or badly out of flat
14. Over coil rubbing outside coil, at point where it curves over spring.
15. Balance arm or screw touching pallet bridge.
16. Balance screw out too far, touching bridge or train wheel.
17. Safey roller rubbing dial plate or jewel setting.
18. Fork rubbing impulse roller.
19. Gurard pin rubbing edge of safety roller.
20. Roller jewel long and rubs guard pin.
These are from Kleinlein's book.
