put that 50 pilot on the wire wheel on a bench grinder and clean it off. as long as the threads are good idc throw it in wont matter as long as the passages are clear.. and btw pwk carbs dont measure the same as far as float height that south texas banshee video is only for stock carbs. its 16 mm but dont bother buying the stupid tool to measure float height. put gas line on the inlet and blow through it, push the float up till air stops, float should be parallel with gasket surface when it shuts off, boom done. isnt this a brand new built and first start?? reeds shouldnt be bad. sounds carb related. btw that 160 will likely be too much main, might need a few sizes smaller, but get your starting issue figured out first