As reported elsewhere on the forum I built my first 2 wheels and they came out great.However I checked tension today and it seems that tension is reduced following the addition of the tire at 100 psi.Before I put on the tire, average tension was an acceptable 107 rear drive side and about 90 front.Now rear is like 100 and front like 85.Should I increase tension or call it a day?

The final tension, true and dish should be done with the tires at full riding pressure.
Rear wheel dish will be effected some due to the asymmetry of the flanges.