Wondering if there is a trick to this. I have 4 lights over my oversize 8’ table I just had set up in my house. I put in 100 watt bulbs and have the light set up 40” over the playing surface. When I turned it on I have like a 3 rings Of shadows on the sides. I changed out the inside bulbs for 60 watts and that fixed the sides and the middle now just has a shadow on either side( thinking from the 100 watts on the outside). What type of bulbs should I use and wattage for each lamp to fix this shadow issue