Stumped on No start

I have a quantum xe 6hp briggs and stratton motor on a log splitter that I acquired. It looks to have been sitting outside for its entire life. I have tried starring this engine over and over with no luck. The items I have tried are follows....
- one new carb/ rebuild the old one
- Replaced all sealing gaskets/oring for carb
- new fuel lines
- 3 spark plugs
- Spark is visible when plug is grounded to engine
- plug is wet after trying to start (20 pulls)
- checked the compression and it reads 75psi
- kicks over once or twice on starter fluid
I did notice that the exhaust valve slightly opens on the compression stroke. I am not sure if this engine had a decompression release. Any help would be greatly appreciated.

Model is 122K02-0412-E1
05092157