I smell gas from my 6 banger

Thanks for the replies - I am already running with a thick gasket and my float has been replaced. The heat control valve is loose and working properly. I also recently rebuilt the carb. The gas smell was there before I rebuilt it and is still prevalent. I've owned old Valiants in the past and they never smelled this bad. I also replaced all rubber gas lines recently. I guess I'll have to dig deeper into this.