I had original raced the EB410 and ET410 on turf and would later discover that TEKNO's were designed specifically for dirt.
I would later switch to PR and it was night and day better after the switch... I went from middle of the pack trying to get bumps into the A with TEKNO to becoming a pack...
We have a recent discussion on some storage methods for batteries here:
https://www.rctalk.com/forum/threads/lipo-batteries-storage-ammo-box.137137/post-1365501
I really hope you're not placing all 24 batteries together, if 1 pack fails and catches on fire, it will create a massive chain...
Fun fact... RTR stands for "Ready To Replace" electronics :(
Over the years I have learned to stay away from RTR's and have found it far more cost effective to build a kit and install quality electronics from the start :)
I am no longer affiliated with PR (used to be a team driver with them)...
Just to clarify, you only mention binding the new radio, did you re-calibrate the ESC to the new radio as well? If not then that's probably your issue.
Very important to have the throttle trim set to zero when calibrating the ESC too.
Good Luck!