Throttle position issue

Hello all, have a question about my accessport. When I accelerate to WOT it is showing the the throttle is only at 67%. I've tried in 2nd, 3rd, and 4th gear. I've held the pedal to the floor for 10-15 seconds and no change. Is this a normal reading or has anyone else experienced this? Car is an 04' 6 speed. I've had the Mazdamaniac calibration done. Engine runs fine, was just curious as to why the TPS didn't show 100% when the pedal was fully pressed. Thanks in advance

Throttle position issue