There are a number of things that can affect your slider's reaction.
- Incorrect air gap
- too heavy an Oil
- incorrect basket endplay
- too large of an RPM gap between the 2-step box and the actual stall speed of the clutch
condition of the outer basket
- If it has been a few seasons since you've had your outer basket serviced then it might be time to have it rebuilt
- A basket with weakened springs can cause an erratic operation of the clutch as well