Curved Stair Question

[JKEdmo]

Good afternoon,

 

Laying out a curved stair.

 

How can define the overall run of the stair to be exactly 90 degrees?

 

As you can see, the stair below is close, but slightly off.  I must be overlooking a setting or unclear on technique.

 

Thanks again, Jim

 

[JKEdmo]

I figured it out (pats self on back).

 

I had "Lock Tread Depth" checked.  This fixed the run length of the stair.

 

So, I unchecked "Lock Tread Depth" and instead checked "Lock Number of Treads."  This allowed me to adjust the curved stair drag points to some cad helper lines I drew.

 

Jim