Quick update: So it appears that my kickdown switch is also a culprit with this shifting issue. I went to press it down and noticed it stuck in the down position. I have a new one on order and should be available tomorrow. Now, how do I remove this switch? I've been browsing around the forums and haven't been able to find any threads that indicate how to actually remove it. Is it as simple as pulling it out? To see if there was a difference, I disconnected the kickdown switch and attempted to drive it around. I felt shifting at 15MPH and 20MPH, but wasn't able to push past 30 too well. It would rev to around 4200RPM and stay there. Maybe I need to readjust my Bowden Cable?

The vacuum transducer I ended up patching it up with krazy glue and heat shrink and am getting good vacuum going through the line. This is, of course, a temporary fix until I can find the actual part.