I try to make this short... Bought a 37 yr old house over the summer. I tackled the living room for a new paint. I noticed lots of chipping - which with a scraper came off. Then I speckled and sanded. The problem is: TOO MANY SPACKLE spots now. So I tried to paint it but the light orange color I picked showed all the Spackle patches in the small area I tested. Then I went to Home Depot they gave me Killz Primer Stain Cover. I tried - too runny on the wall barely covers my Spackle spots. On the other wall (small area) I tried to use my ceiling paint - first coat. That shows the white spackle spots too. I wait for it to dry and see if I can paint it again. I might have to paint it over a few times with the ceiling paint before I can apply my two finishing coats. I wonder though if the spots can be fully covered? Why Home Depot did not give me a thicker primer to use? I am beginning to lose hope.... If you have any advise, please help. Thank you.