Welcome to Stovebolt. Many good people here who will help you. As you go along, Let us know your progression and if the problem is fixed.

Please let us know what engine is installed. Some earlier bolts have later engines in them and therefore once you are past the leaking carb, it will be easier to help out. If you don't have a shop manual, get one. They may be on line here.
If you don't know what engine it is, look for the number just behind the distributor and post it here. They we will know what we are talking about.

It sounds like there are a couple of issues here.
There may be some trash in the carb.
The float may not be set correctly.
The carb may be warped and therefore tends to leak.
Someone tried to fix this with the partial kit that you found, and it sounds like without success. I would rebuild it or have someone that knows how do it for you.

While that is being done, Pull your spark plugs and see if they are sutty or oily or a light tan or clean(new). That will tell you what is going on in the cylinders. Their condition is important too. Are they worn out? Burned? If so get new, recap and install.
You say it was kind of noisy, so you changed the oil. What kind of oil pressure do you have? Is oil getting to the rocker arm and push rod assembly under the valve cover?
Have fun.

1951 Chevy 3100
Some days you get the bear. Some days the bear gets you.