Quoted from doro-mini:
Is WHITEWATER a difficult pin of repair?
In my whirl pool, ball spins too much and does not fall immediately.
I was able to count up to ten seconds.
Could be a leveling issue. What you should do (in my novice opinion) is remove the upper playfiled and all of the ramps. Get a 6" level and put it directly on the playfield, both at the front and the back. Get it leveled. With the upper playfield on there its hard to get the back end leveled as well because there's no place to put the level for a reading, that's why it's good to get the game leveled when the upper playfield is off.
While you're at it clean everything with Novus 1 (and Novus 2 in the rougher areas), replace all the rubber, and put Cliffy (and maybe mantis) protectors on it. Then wax it and reassemble. Put new pinballs in.
You pretty much need to do all the cleaning and whatnot anyway. In my experience the leveling can greatly affect the amount of time the ball stays in the Whirlpool. If you want to put in reproduction ramps (they cost around $600) or reproduction boulders, this is the time to do that too.