Originally Posted by
DorkDisk
The top of the stem expander must be installed flush with the steerer, not above the steerer.
Take it to a shop.
ftfy.
Originally Posted by
ScreamingB
I loosened the 8mm hex key, placed a credit card on top then smashed it 3 times with a bottle of shampoo and the expander came lose. But I could not pull it out even it's lose. So I just tightened it to 4Nm and it's all good now. Stem gap is now 6mm I hope it is ok. Thanks.
That's too much gap between the steerer and stem IMO. You need to get rid of 2-3mm of spacer below the stem.