A few oddities (newb question)

[NetNomad]

Maybe it's just me, but I'm noticing some differences in finding items with my fifth character - a RAmarl/Greenill. I created this character two days ago, and earlier tonight I finished normal mines. But the strange thing is, this character seems to be picking up units rather often. In the caves, I was finding General-level units (two General/Powers for instance), when IIRC I would usually find low-level units. I also found a Nar Lily which dropped a General/Mind. I know Greenills are supposed to find rare rifles often (that's why I got Greenill in the first place; my RAmar/Redria doesn't have very good chances in that department), but do they tend to find good units, as well?

A related question about this character: during the mines I found an S-Parts ver2.01. It was dropped by a Gillchic, I think (it was in the reddish room of Mine 1 and it was in the third "wave"). This is rare for normal, correct? I don't know of any good drop charts (that are currently available); what are the chances of this?

[Gynn Rei]

The chance on getting those parts is very slim... I can't tell the exact number... but you've gotten lucky imo.

As soon as you come in the hard mode you'll start finding rare items... you can find some in the normal mode but those are almost impossible to get. Greenill will start off finding rare Rifles and Redria will start off with Slicers (Ep I) and Shots (Ep II). Later one Redria will find rare units more often, by that I mean in the Very Hard mode and Ultimate.