Sanding the marks seems to have made some difference at least.
After sanding I reapplied some of the deep colour coat.
Before and after:
- Sam
IB-5 - was finished, considering re-finishing body
IB-6S - done.
JR-1M - dressing frets and electronics build
ST-1 - still wondering how to install a tremelo
Telebass - non-PBG from parts buiild - painting body