[2013 Gibson SGJ]

2 hours ago, kidblast said:

I don't think so, these are sealed and asfaik, there's nothing to be done in regard to "regular maintenance". 

If your are the original owner you could and maybe should contact customer service and start asking about it.

are they slipping tuning or just feel "loose"?

They feel loose. And possibly slipping. I am attaching an image. These are not the same tuners. But similar. I didn't think they were truly sealed? I have Gotohs that are sealed. I thought because of the hole in these that it may be possible that the lubricant has depleted over time.

[2013 Gibson SGJ]

I have a 2013 SGJ. The tuning machines are starting to feel like there is a little give when I tune the guitar.  Is it possible to take the tuners off and grease them? Will that help get the tension back?

Thanks

Greg