So lets say your blades are at the 12 & 6 o'clock positions in that pic. How do they look in the 3 & 9 o'clock position? Are they the same height at the tip where they are closest?
Here is a tool that use to check my decks. You will want them even on the side to side but the front should be about 1/8" lower than the rear. Make sure your blades are not bent and measure at the tip.
https://www.amazon.com/Oregon-42-095...zcF9hdGY&psc=1
Here's a good vid.
https://www.youtube.com/watch?v=wA9x699q4Bs