Hi welcome to the forum.
1) What am I doing wrong?
Couldn't really say, we don't really know what you're doing.
2) I am getting gas leakage from carb #2 out of the accelerator pump. Is that what's holding me back?
No, this alone would not keep you from starting.
With that being said, you need 3 things to start:
1) Compression (you claim you have this by way of what testing?).
2) Spark (you claim you have new spark plugs, but did you verify that you have spark?)
3) Fuel/air (you claim you "cleaned out the carbs," what does this mean to you exactly?)
So basically, you are right off the bat saying in so many words "I have everything I need to start, but it's not starting." So first off, you should take a step back and re-evaluate and come to grips with the fact that what you thought was good or whatever you put a mental "check mark" next to, is maybe not so good.
You solve problems by doing troubleshooting correctly and methodically. If you want to chase your tail around and hope you get lucky then you can do it another way. Here's what I would suggest for you if you want to solve your problem (and you will if you are serious about it).
1) Post pictures of your bike. With pictures we can see your setup, modifications, what we're dealing with. Some close ups of the engine, carbs, clearly lit, focused, and well framed.
2) Answer the questions above in the parantheses.
Please be honest, cause if you aren't you might just waste people's time who are taking the time to help you, and that wouldn't be very nice, would it?
