Effects Speed

Hello, I have two questions:

 

1) is there any way to control the speed of the effects other than the small tempo cell in the effects page?  With tap tempo, or with the wheel?

 

2) is there any way to more finely control the values in the cells in the effects page?  When I move my finger up or down, unless I am extremely careful and slow, I only get extreme changes in value.

 

Thanks for any help.

 

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