Garyf Thanks. It is exactly what I needed. Though not the result that I wanted. Straight tri bet 1,2,& 3 would be less than the 1.9% I gestimated. For this to have a chance short priced fav races will have to be passed.

fav = <$2.50 3950 races as above for 2146 wins 54.4%
Fav = between $2.50 and $3 3720 races for 1169 wins = 31%

Just cutting races where fav is <$2.50 will still give 75% of the races. This will increase the divvie but what will it do to the strike rate?

Using <$3 as a filter leaves 53% of the races of which the fav only wins 21.3%.
The only trouble then is that one would have to sit at the computor all day.

Maybe a PP filter <$2.50 PP no bet

Regards Beton