The mark on the balancer is one line full width, indented. You might be able to feel it if you cannot see it. I mark mine with a silver sharpie when I need to see it. Is gas pumping through the carb?
To find TDC I use a tissue to watch as I turn for the compression stroke. It will blow the tissue, then I put a screwdriver in the plug hole and hold it loosely. When the piston gets to the top it will start to go down and you will feel it. There ya go.