Yep, the drawing was to scale. What I did forget to mention was this site had iAP 93's and the heat map for that was fine. They then had iAP 205's installed so I removed the old floor plan and added the new one (same scale) but with the 205's in there new positions... I also had another site do the same with 93 -> 205 upgrades.
Danny
Sr. Network Engineer, ACMP, ACCP