In addition, one of the later-redubbed episodes ("Growth Spurts") had a new minor edit covering over a minor mention of "Kick Ass" to just "Kick", obviously because of minor cussing in a children's TV show.
And on top of that, there were actually several episodes left unfinished, due to the show's cancellation. Three episodes, one being the history of robotics, one about Robot Jones going on the "Soapy Winfall" talk show, and an unknown episode (as he cites "it was so long ago I forget...") were storyboarded but never animated. It can be assumed that the first episode could have revealed more of Robot Jones' family. It is rumored that there was even an unknown Halloween episode that never aired.
And finally, there are two episodes that are uncomfirmed to have existed: "Risk" and "Robot Grafitti". They were rumoured to have been banned by Cartoon Network to air in Season 2 as the fourteenth episode because of excessive violence, harsh language and sexual and/or scatological jokes.
So while it's just barely possible to find all of the episodes in varying degrees of quality, it's even more difficult to find all of the original cuts of the episodes. As for the never released audio and episodes, Miller claims to be in possession of VHS copies of work prints of the Season 2 (and maybe pre-Season 2) episodes with the original voice floating around somewhere, and while it apparently may be difficult to get any storyboards or concept art of the show from Miller, storyboards from the aforementioned talk show episode have been made available online from Chuck Klein's blogspot.
3 episodes using the original audio were uploaded to YouTube, Making the total of episodes recovered up to 4; the uploader, CartoonArchive has stated that he may own more episodes using the original voice, but it is unknown. Additionally, on the exact same day, YouTube user '1mjusth3r3' uploaded some commercials from the show in its early days that also use the original voice.
Good news if you wouldn't know it, SuperPowerpuff2061 (known as Bigfatloser86 on deviantART) has uploaded all of the Season 1 with the original voice onto Dailymotion (including the uncensored version of "Growth Spurts" whose video source derives from the recently uploaded Portuguese dub on YouTube), using video sources from the same videos uploaded from before but dubbed with audio taken from low-quality camera recordings of the original episodes uploaded by NickDanielsen on Vimeo. Hallelujah for all the RJ fans who always wanted all the Season 1 episodes with the original voice.