I have tried the "amplify weak sectors" thing with my Mitsumi, tried:
Read:
4x.
Read Subchannel from Data.
Fast Error Skip.

Write:
2x.
Amplify Weak Sectors.
Don't Repair Subchannel.
Always Close Last Session.

Didn't work.

Then Tried:
Read:
4x.
Fast Error Skip.

Write:
2x.
Amplify Weak Sectors.
Always Close Last Session.

Didn't work, but given this might have been a problem cause Hot Date detects if CCD is installed...

When I use BB, I Tick Read Subchannel from Data, use BB, then write it back to CD Tick Don't Repair Subchannel Data. I found that if I don't do it this way BB doesn't work ...