The magnets don't "see" the wood, or your fingers, very well at all. The idea was to block out the air gap so no way fingers could be put into danger. You would still want sub pinkie sized gaps to maintain the air guitar schtick.
9kg is not your usual 112. It should dangle ok.
The dangle might help the near side clear your knee just a little as you handbag it.
Easier to 'put' up on a shelf or into a small car boot with the handle like it is.
As a practice amp you need to accept the limited output volume. I think it's likely your ugly tones are the results of
Overdriving the preamp.
Overdriving the speaker.
Both.
Try dialing everything back a bit.
Ease but not fully solve.
A possible solution for two historically aggrieved mismatch owners.
Step 1. Agree a value differential between older stack and new[ish] stack.
Step 2 agree value of present stacks as stand. Important if one got a a bit shabbier than the other or one is vastly newer.
Flip coin. Winner gets to choose to pay other out to get the newer stack or get paid out and receive the older stack.
In theory they get your muckuo back good as new and fire it off to the next in line while diverting theirs off the line to get the correct hardware and send it to you. 1 week.