Dead_Or_Alive as long as you go through the tube you'll get it

ethan-enhe that was CHARREDLIZARD21's idea and it worked although you don't need to erase the grey if you cover it

Dead_Or_Alive it works in rangerx's tracks

Dead_Or_Alive one of my friend recommend to "use gray line for curves and go over with black straight line and then remove the grey"