I just rebuilt mine and picked up my kit from napa, however i watched this video and it helpmed me a lot.
My model was a model b and one thing to be careful with is there a think 3 small ball like bb's one is aluminum and a steel ball the same size. I think my kit or the video says not to use the aluminum on the model b carb.
I think the most important thing is to clean it well and I used a gallon of berrymans that I purchased at walmart for 18 bucks while the FLAPS wer ten dollars higer. I would also get a can of silicone spray.
These are somethings that made mine easy since it was my first one also.
Lastly becareful with the little springs and balls if you drop one good luck in finding it.
"As I lay rubber down the street, I pray for traction I can keep, but if I spin and begin to slide, please dear God protect my sweet ride." -Amen