Disappointing dyno results

The shape of the curve in post 145 page 6 is not the shape I would expect to see for a correctly running engine.
Check and verify the basics as many have pointed out. Use known good parts to substitute parts that are on the engine now to eliminate some possibilities.
As a dyno operator some motors can be frustrating to sort out. Sometimes it takes more than one attempt to find the problem.
Check your uncorrected numbers and compare to your corrected numbers to make sure you don’t have a weather station sensor messing up your numbers. Your correction factor channel should be steady during the pull.
Good luck!