A little more info would help.
Do you know the level of your sensitivity?
Do you know your ground mineralization level? (I think I get more falsing in my iron mineralized ground than say, in clean ground).
Were your "good signals" four way signals, two way signals, sporadic signals, etc?
Generally I find that when signals blend they aren't good per say. But, it's hard to describe it. There is a difference between a blended signal and a coin signal in iron.
I can usually tell iron falses as they just don't repeat as consistently as a coin. By consistently I mean exactly in the same spot and on each swing. Even if the signals are softer, they should still be consistent (unless you are in heavy iron).
Of course we all dig some trash as coins in iron require us to.
I'd also try running both 50 Conductive (with some disc) and compare it to Combine on targets. Combine does seem to reduce falsing in my ground over 50 CO, but combine misses the occasional good ones due to that.
Albert
zagg