2 new problems

[Dirtkid93]

ok so i have a230 inline 6 engine. 3.8 liter, when given gas at half-full throttle, the dinky 1 barrel carburetor bogs down and actually causes me to lose speed. would this be an air/gas mixture easy 3 second fix? i just rebuilt it too and it ran strong, no I'm having a hard time getting up to 45 mph ( if I'm lucky )

and the second question is my lighting, my blinkers run fast like one of them is burnt out but they aren't, and my brake lights don't work when i step on the peddle, but the running lights in the rear work, so could this be a ground wire issue? bad relay switch?