Problem with transmitting IMU/GPS/Ultrasonic data over Nrf24L01

There are much simpler methods to change the length of a string than copying it... into a shorter array..
Set the Nth+1 byte to '/0' and you have shortened it's length. Co-incidentally it uses less ram
and fewer instructions and that can only mean that the program will run faster so you have more time for other tasks, W/O copying that array an extra time. You Might try to 'single' step that array manipulation in your head, I think you'll find the required modification to make it perform (print) as you so desire.

Bob