Hello spencer,
First off since you have the pro pack. If you are hunting a spot with really small gold. Usually you'll get a little better target identification on small gold with the little 5" coil. But traditionally small gold target id's jump around on most detectors that i've tried. Mainly cause they are either almost out of reach of detection range or they are so small that the detector is having trouble identifying them. Usually if you are scraping the coil right on it, the id will be more true. Tiny pieces of gold usually id in the 40's on fors. Bigger coils have just a little tougher time identifying tiny gold. So you might try the 5" coil. When it comes to hearing the little ones a little better. I run my id masking turned down from 10. To 4-5. But if the mineralization is hot, turning down id mask will make it even more noisy. When you can turn it down, it makes the tiny stuff more apparent on the signal.
As far as digging lead, brass, foil, tin, copper etc. This is normal. I have buckets of these targets that I bring home and throw away in my street garbage can. At least it gets consolidated in 1 dump instead of scattered throughout the goldfields.
As far as signals. If you try a erratic shaped piece of lead and a piece of gold around the same size, the target id's will be similar. After awhile you will recognize some signals. Usually because of their uniform shape. Like a 22 bullet tip that isn't mushroomed. Or a 22 empty brass. Pellet gun pellet etc. I still dig every signal that goes off over 40 on fors. Even if the signal jumps back and forth between iron and gold. There has been many that surprised me.
When you set your sensitivity, I usually run mine in boost mode and sens. 80-85. It is a little chirpy. But if you have too much ground noise and chirping going on. Just turn it down 5 sens. at a time till your comfortable.
Thats it for now. Gotta get going. Maybe Steve can mention some of his tips with the fors or vlf in general.
Good luck