There's numerous ways to tell if it's still rich but the easy way is if the bike is cold and it start's without a choke, it's stil too rich. You should need to choke it to start it and then, depending on the air temp, be able to push it halfway within 30 sec (65-70 degrees temp) and all the way within a few blocks.

While the choke is in, it will blow a little black smoke. If it puffs black smoke after it is warmed up then it's too rich and you need to move the clip up.

Remember move clip up to lean, down to richen. When you're moving the clip up and down, the needle is positioned so the slots are at the top (the same way the needle goes into the carb).

Now that you have moved only the clip (4 to 4.5) did it run better or worse? If it's worse then move the clip the other way; from 4 to 3.5.

Doc