Try posting at the arborist site if you don't get a good answer here.

If by bracket you mean the teeter totter lever, the dimple goes down. It holds the spring in place so it won't slide off.

Make sure the main diaphragm is furthest from carb body, gasket is first.

The hole the inlet needle goes in may be dirty. A trimmed cotton swab stick with cleaner can be used to to clean out the seat.

Ok, thanks. I got it back together but now it won't start unless I prime it with carb cleaner and then it starts and immediately dies. When it was flooding it did run ok once I got it going.

I finally got the carb adjusted correctly. The oil pump wasn't workig so I replaced the diaphram. It's pumping oil fine but when I shut the saw off oil continues to seep out of the port and puddles under the chassis. The oil pump has about 20 inches of vacuum in one direction and none in the other. Any suggestions?