tamiya re-scribing tool.

I have used it many times and it works fine.The UMM scriber is the best.Thats my opinion.Also, not to get into a situation to scribe lines at all.Purchasing good quality kits is bestOnly scribe the joining lines between parts.Raised panel line kits like monogram and others out there will be about a 100% of Re- scribing.You will need aircraft prints to replicate those panel lines.

gently pull the scriber backwards in the line. Don't really apply pressure let the scriber do the work. You may have to do a lot of pulls bu it should work, putting pressure =causes the jumping

I use a pin vice as a holder for a sewing needle when scribing panel lines. Works for me and most of us have a pin vice on the work bench.

Haven't used that particular tool, but the general consensus is to use Dymo tape. Those old tapes for printing sticky labels, they are thick enough to act as a guide for the scribing tool but flexible enought to wrap around contours, as long as they aren't too small in diameter. Then just go slow and use very little pressure on the first few passes. I usually wind up with 5-6 passes before I get a line I like. The first few passes is just to make sure your later passes don't skip out of the groove. Doing this freehand is almost impossible not to skip out..

Sorry Ian, I have never used the Tamiya one.  I use a seing needle mostly.

i take it nobody re-scribes panel lines then !!