Hello Brent,
One question; what is your sensitivity setting?
I keep mine maxed out, adjusted to 32 and only hunt in ALL METAL MODE (CLEARing all SELECT options) with IRON MASK set to 22. You'll quickly learn to differentiate the various sounds with use of your SE.
You may wish to try displaying SMARTFIND, concentrating on digging targets shown in the UPPER RIGHT corner and LOWER LEFT corner (of the ACCEPTED area) at least, for a while. I find the ID screen very accurate but always dig those iffy sounds.
I honestly believe the fault is in your settings if you are not able to detect "ANY" quarter at 4 inches; more time and experience should solve all your problems with the SE.
***I came back to make another suggestion.
You may wish to always ground balance (NOISE REDUCTION process) at the beginning of your hunt or when changing coils. Be sure to turn IRON MASK to OFF to be certain absolutely nothing is beneath your coil. Also, move away from iron structures or overhead power lines as it's been my experience either can interfere with the balancing process.
Good digging!
GRB