Obsidian plinth dust cover adjustment

Definitely, my SH10-B3 dust covers are raised all the way without falling.
Have you tried checking for loose screws?

@nandric

From the photos I am attaching you will see the hinges broken down and made up of multiple items of the Technics base SH 10 B3.

The bottom screw you see should serve to adjust the spring preload, you should adjust that screw by screwing it or unscrewing it to make the cover dust rise.
Also in the hinges of the plinth of the JVC QL7 there is a similar screw; if you tighten it too much, the lid does not remain raised and slides to the ground if it remains completely "unscrewed" the lid remains raised without any problem.
You just have to try to adjust that screw.

https://postimg.cc/rd3hBbQh
https://postimg.cc/r0P1rk2c

and provided
with Technics pneumatic ''towers''

what towers are they?

@nandric 

I am happy with the original Technics feet, the rubber is perfect in all 3 obsidian plinths I own; keeping them perfect and efficient with a rubber protector for several years ... I could sell them for new ones. LOL

@nandric

ok ok ok I already understood everything ... they are the usual and nowhere to be found Audio Technica 616

@nandric  

Maybe you own the AT 636 and wanted to buy the AT 616 and sell the AT 636 to me? I can not think otherwise or vice versa were you kidding writing a simply ironic intervention?
I don't understand .... my english is very rusty!  LOL

@nandric 

If I don't own them, why should I complain about them?

??!!!!

@nandric 
ok, now I understand that you really own them, I had seen an ironic thread with the chackster because it has been talking about it for a long time about the AT 616 and it has also been trying for a long time to sell them.

Yes I agree that better feet can make improvements but if I had to buy feet for my SH10B3 I would rather even ask to try more recent products at my dealer.
But for now it is important you have solved with the hinges.