Hello Mick and Dan.
First of all, thanks for your input.
The Test Mode is indeed not as accurate as real mode, and it was never intended to be that way. It is a quick-testing tool for roughly evaluating your strategies.
As I understand, you suggest an improvement to the way test bets are matched, i.e. they can be matched even if the current best price is worse than the one you offered.
So if you, say, backed at 5.1, and the current best back price is 5.0, you suggest looking at the volume matched at 5.1 and if it has increased by the amount that is equal or greater than your bet, then match your bet accordingly?