Probably rubbish,, cheap fix wrap the expander with double stick tape.

if your spacers are looser the stem bolts are not tight enough,
Torque wrench puts a number on how tight.. get one.
Carbon stuff prints numbers on it now
The top cap just pulls down on the whole stack once the stem is loosened,
once you tighten the stem bolts, the top cap and Etc, it's just along for the ride.

my Dad [RIP] was a machinist so I think about fabricating stuff, still ..