With "additional tracks" are you referring to those data tracks at the end? Because those are present on the real discs as well, and they're one of the reasons PCE cds are difficult to dump. I dumped a few PCE cds myself and the number of tracks is exactly what you see in Redump database, no more no less.
"Possible bad dump" is a generic warning but it's true, the dumping tools available atm can't guarantee
perfect PCE-CD dumps, if such thing is really possible considering the subcodes issue.
Anyway the entries in Redump are at least:
1) dumped with the correct tools (PerfectRip and/or EAC - this obsoletes the old "1:1 from 2002" crap dumped with CDRWin or CloneCD)
2) offset corrected (this obsoletes the TOSEC "cut-off audio" dumps)
It really is an old argument (I think there was a discussion about good cd dumps in these very forums years ago), but nothing seems really changed if CDRWin dumps are still considered 1:1...
I would use Redump entries as a base for the lists regardless. It's not a priority considering PCE-CD emulation is still on its way, but Redump's still the only database which has a basic grasp of what "1:1" really is. I have a few discs here to test on, if it's needed