I have done a run of the last 513 races with exactly 14 runners & adjusted the barrier draw after scratchings .

For those who might not be aware, the barriers are always adusted inwards if there is an inside scratching .

You will find most TAB internet sites do not show this adjustment e.g.QTAB

RESULT
B- %
1-10
2-6
3-8
4-9
5-6
6-7
7-8
Top half 54%

8-3
9-5
10-7
11-5
12-7
13-6
14-7
Bottom Half 46%

Some observations
Barrier 1 produced a profit of 0.54%
Barrier 2 produced loss -26.9%
Barrier 10 produced a profit 3.54%
If you bet all 14 produced a loss of -26.9%
on turnover.

Interesting ,considering if one backs Favs only ,it would normally produces a -20% loss

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Cheers.