I installer the tech batt plate last night, simply dremmelled the posts whitch the retainer srews go in down a few mm, now you can adjust the height so that it hold the cells securely.
I also put on the Tech low top deck, and was a bit bummed that you can no longer access the battery corally plugs, if you orientate them on the inside of the chassis, and the cells dont sit flat if you orientate them towards the outside. I guess i will just have ot plug the rear connector on before i insert the pack, the forward corally plug can just be installed.