I've had several Epiphones, and generally, I found the pickups to be of good if not great quality. I swapped out the three P90's in my Riviera P93 with boutique pickups, and regretted it not being stock. I personally think it is about EQ in most cases and it takes a bit of work to get the bridge intonated and the height of the saddles right. Once all of that is done, dial it in and enjoy playing. If the bridge rattles, it is the retainer wire (not sure the name of that piece), I believe. Maybe a Wilkinson roller bridge or another option could be considered? Too many players love these guitars and use them to perform, so I think such problems are minor and typical of any new instrument. Adaptations and adjustments always need to be made, right? Enjoy your Casino! Congratulations.