Disappointed with my engine

The OP was given plenty of reasons why his car is slow, and then he explained why we are all wrong. He’s on his own.

Well Mate it's called discussion, I listen to you and then I respond. I did ask for further info on your thinking about the vents becoming pressurized causing the fuel to be forced through the carb but no reply. If there had been I would have taken it on board especially considering ny past experience putting both together and replied. I don't think any one individual is right about everything.