Shrek1112,
The problem you are experiencing is common and is also resolveable. The first uption is to adjust the detent setting on the splitter valve. The viscosity of the hydraulic fluid is greater when cold and the detent setting needs to be increased so the cold oil does not affect it. If the detent is non adjustable, you can substitute a hydraulic fluid of lower viscosity. I guess the splitter could be stored indoors before use, or a magnetic oil pan heater could be placed on the hydraulic reservior.