So the largest cake I have done was 4 tiers but I put it together on site. I have done many others usually 2 tiers that I either travel with it stacked with dowels on the bottom tier or I put it together on site. Im having a hard time wrapping my head around the center dowel and would like some clarification…do you put the center dowel through the entire cake? Or every tier except the top? Wouldnt it leave a huge hole if you put it through the top tier down the cake? And do you have to have the holes pre cut on the boards underneath each tier or just get a sharpened dowel that would go through it?