Slant stumbling on acceleration

Ok, a little more to report. Due to time constraints and test equipment failure (:wack:) I did not get to look at as many things as I wanted. Things I did get to:

Wet float check: Measured right at 27/32, which should be correct according to the FSM I have.

Plug examination: This one was interesting. #1 and #6 were totally black & fouled. #5 had evidence of soot on the insulator but not the tip (like maybe it had been fouled at some point?). I know there are folks much better at plug analysis than I am, so here's a picture of them in order looking from passenger side, #6 on far left and #1 on far right. I did make sure the 1/6 wires weren't switched.

View attachment IMG_20140809_115251.jpg

Things I didn't get to:
Timing: The timing gun I got hold of was a POS. Should've known better with Harbor Freight.
Plug wire resistance: What I thought were dead batteries in my multimeter (Craftsman, not HF!) was not the case. A fresh set of batteries and no dice. It appears to have crapped out too. Which means I couldn't check the voltage at the coil either. Looks like I have some shopping to do.


Regarding the info I left out earlier, my bad. Car is 68 Valiant. The original coil was an old GM coil and the PO left the ballast resistor connected. I had replaced the ballast several months ago (mainly because I didn't trust it, not because it had started acting up). The new coil I put in is the Pertronix 3.0ohm. The ballast is still hooked up although it's my understanding I can bypass it with the new Pertronix coil? (I noticed there were 4 wires, two at each terminal, on the ballast. What are the other two going to?)

Hopeful I can get a little extra time later today to look at it some more.