LS3-A water bags

I want to remove the water bags in my LS3-A and check them for leaks.
The only hole I see at the wingtip is a 3/8 hole located on the bottom
about 2 or three inches from the tip. How do I get the bag out
without ruining the ability to get it back in?

Also, the seat belts have been in the ship since new. No tags on the
belts. They are in fair shape but I am replacing them anyway. My
question is, since these belts are original, and no TSO tags, how did
the annual get signed off every year? (I know how the annual got
signed off. 200 bucks and your done) But as owners of these
sailplanes we are legally responsible for the airworthiness of these
ships. How many of us are getting pencil-whipped anuals. Is this a
concern as the average age of the fleets is getting older? This may
be a beer-in-the bar discussion but I am curious as to who is getting
inspections done by an IA experienced in glass sailplanes or just
getting a quick sign off by the powered aircraft IA who works ourt of
the back of his truck?

Thanks
Mike Martin