Why such big differences between lay and back prices for same bets?

Welll done on taking 20months since joining betfair to get the courage to ask this question

hahaha

ha ha. I assume you don't know the reason either.

Are the gaps increasing?
Based on my recent frustrating experiences I have a strong feeling that they are (at least in NBA, NHL, MLB and Football). Has anyone done any research concerning liquidity?

Why doesnt laying the fav in every race work :^0

So narrow them then.
You know how to do that don't you ?

Glasgow Brian
It does if you lay them at the right price .

its the thread he started and went on forever with that aussie lying bstd BTO getting involved

are you asking why the back price may be 2.0 but the lay price might be 2.04?

or something else?

yes that appears to be the gist