Actually we count the first stall day regardless and thereafter we wait and don't count another one until the total count will contain more distribution days than stall days (for example 3 distribution and 2 stall days). The uncounted stall days are kept in your back pocket until the time they can be counted or they fall out of the 25-day/ 6% window. One of the consequences of bringing a stall day out of your back pocket is that on that day you will see the distribution count increment by two.

Here is a possible sequence of five days:
*Stall Day, Count = 1
*Distribution Day, Count = 2
*Stall Day, Count = 2 (one in the pocket)
*Distribution Day, Count = 3 (one still in the pocket)
*Distribution Day, Count = 5

Incrementing distribution count by 2 can cause some unusual sell signals such as: S3-AND-S4 or S4-AND-S4 on the same day.

As you have discovered the stall day rules are fairly difficult to use. A spreadsheet helps a lot and can automate the entire distribution counting process.

In counting S4 (full distribution count) sell rules I learned something last week. An S4 Full Count or S4 Full Count+1 or S4 Full Count +2 should be counted only once for each level. So if this were the distribution count sequence:
3,4,5,6,7,6,5,6,7 We would see an S3 for the 5 level, and S4 for the 6 level, another S4 for the 7 level but we would not see another S4 for the second time we arrive at the 6 and 7 levels. If the count falls back to Full Count-2 (4) then we reset the S4 flag and can have them again.