Started from the real square one...
I decided to overhaul all the programs and the shtuff that goes with them.
TMPGenc Plus 2.58
DVD2AV1 1.76
fitCD 1.0.5
AVIsynth 2
mpeg2dec.dll
Welllll?

.....I can open avs's @ 29.97 source now. I hope it holds. Personally, I don't think it was my mpeg2dec.dll but I do have different one now. Can't tell, my previous and new were 180kb. I also did another non-force Tarzan.d2v. I'm going to bet that I had a corrupted d2v.
I still have the green displays in TMPGenc though. My highest priority VFAPI Plug-ins are my Avisynth/VirtualDub script reader v0.1 and below that is my DVD2AVI Project File Reader 1.76+.
I've taken a big step forward and so far so good!