Sorry, I mean the 2 locking handles/knobs, if you look under the hardlid at the locking knobs, where the tabs turn to lock the lid, there is a nut you can undo and adjust to draw the tab in closer in or further away to add or release the pressure put on the hardlid seal, when it is closed and locked. This is what I have adjusted.(have just re-read this and confused myself even)
Hope this helps
Cheers Tony
Hope this helps
Cheers Tony
