MAX31341 is tuned for a 6pF crystal. So you have to use a crystall with Cl = 6pF. Normally, 1pF difference can cause more than 30ppm error.
MAX31341C
Production
The MAX31341B/MAX31341C low-current, real-time clock (RTC) is a time-keeping device that provides nanoamperes timekeeping current, extending battery life...
Datasheet
MAX31341C on Analog.com
MAX31341B
Production
The MAX31341B/MAX31341C low-current, real-time clock (RTC) is a time-keeping device that provides nanoamperes timekeeping current, extending battery life...
Datasheet
MAX31341B on Analog.com