Imo you are all barking up the wrong tree.Every paper has its own priceframers(supposedley bookies)and its own tiptsters,but how far in advance do they have to frame these markets,without any knowledge of scratchings,jockeys,track conditions,track bias,etc.?What you should be looking at is the first 5 lines of horses ,market wise that is,ignoring the prepost odds.Horses on the first 5 lines of betting statistically win 80% of all races.
If you look at the first 5 lines,you can then begin to do your ratings,form study,whatever,however,I would suggest that you totally ignore the newspaper prices.They are usually so far off the mark its a joke.Look at the horses on the first 5 lines of betting then frame your own market.