I am attempting to tune a XPR3300 via mototrbo tuner, latest version from Motorola. But, When I go to enter in my measured frequencies, it will not allow me to write 9 times out of 10. I cannot actually correct the frequency error I am seeing in the radio. I am using a freedom R8000c. I am primarily a kenwood bench tech, dabbling in moto to try and tune up some used stuff we have here in the shop. I do have the test adapter to go through the front face of the radio to the test set. We do not have the test box.