Good questions:
You didn't mention it in your "tour" but I am unclear on this statement:
"What I have to do is clean with the cleaning cart all the way to the left, then all the way to the right."
Answer: Sorry that sounded confusing. The wand I have isn't the same width of a Hucard the thickness of the card is the same, but it is about 1/3 inch not as wide (side to side). So here is what You have to do:
First clean all the way to the left (in and out not moving side to side)
Hucard Slot
|'''''''''''''''''''''''''''''''''''''''''''''''''|
|---------------------|
______________ /\
| | |
| | |_________ This spot isn't getting cleaned
| |
| cleaning wand |
\_____ _____/
| |
| |
| |
| |
| |
/ \
|____|
Then clean all the way to the right (in and out not moving side to side)
Hucard Slot
|'''''''''''''''''''''''''''''''''''''''''''''''''|
|---------------------|
______________ <---- Now the right side of the hucard IS getting cleaned
but you are only moving in and out (not side to side)
| |
| |
| |
| cleaning wand |
\_____ _____/
| |
| |
| |
| |
| |
/ \
|____|
2. What kind of cloth is that exactly and in case I can't find something similar, would a rubbing alcohol /water mixture on cotton balls or Q-tips also work to clean the dirt off the cleaning wand?
Go grab an old T-shirt you don't care about, that will work fine. Just make sure you aren't getting a whole bunch of lint on the cleaning wand (you can blow it off, use an air can, etc). Here is your mixture - grab some isopropyl alcohol - like 60-70%. Pour that into a container, match the amount you poured in with water (you are not making it as strong, doesn't need to be). This solution is also good for cleaning hucards. Swabs are always great but you will go through alot trying to clean off the wand, T-shirt works just fine. Cotton balls wouldn't be bad. You can also use this mixture carefully to clean hucards, just don't over-saturate them (be conservative when cleaning your old school systems).
3. Finally, because I'm curious, how come you didn't use wand A? (the largest one) Very Happy Isn't that the wand the instructions say to use on the TG 16? Does it not fit in the chip slot or something?
Does the instructions even mention Turbografx? I don't think my did. The reason - I think it is too thin to really grab the dirt. Honestly, use whichever you want, this is just the one that worked for me.