Doc,
This might help.

The correct way for Target betting is

Exp Win % X Exp Win Dividend X .08

i.e 25 X $3.25 X 0.8 = 6.5 Max divisor

Minimum Divisor (in this example would be 3.25)

The Minimum Divisor is always the av price of your winners.

Reframe your divisors every 100 bets.