When my 2nd horse won, it showed as return of £3484, after my third horse won, it showed as return of £3772.
I had another bet where first horse placed (returns went down cash out went up)
Second horse won
(returns went up and cash out went up)
Third horse placed
(returns went down, cash out went up)
Assume cash out went up as there was only 1 horse on the acca left to run on my bet. Return was only at £35 by this point, whereas on my other bet that had had 3 winners the amount just kept going up.
I had another bet where first horse placed (returns went down cash out went up)
Second horse won
(returns went up and cash out went up)
Third horse placed
(returns went down, cash out went up)
Assume cash out went up as there was only 1 horse on the acca left to run on my bet. Return was only at £35 by this point, whereas on my other bet that had had 3 winners the amount just kept going up.