I mentioned the difference in battery usage and heat when charging. The date of purchase and model may make a difference though. Bought mine at the end of 2021. This is a good article to get some info going into it. I did the online chat with Sony. Good luck!
I can’t add anything concerning stringing that the other comment didn’t already cover, so I’ll ask about the gaps.
Have you tried upping the flow rate to fill them in? The other option I’ve used in the past was lowering my Z Offset if the flow was alright.
Keep in mind that changing your flow rate will likely also cause you have to mess with your retraction settings again.