Well I just noted an annoying error in the rigging! I have a twisted line in the Main sail sheets...
How to replace the line...aaarrgghhh....it is interlocked with others and it would mean removing about 4 lines and two blocks. And the main sail is quite heavy for the mast so it is a delicate job, and I would need to be very careful. I will investigsate trying to untie the end connected to the batten. Some debonder *might* help to get it done, and perhaps leave me with enough line to re-tie it. Wish me luck...
If I am going to do that then I might as well also fix the luff-hauling parrels on the main sail. They were attached before I added the sail to the mast. They should go about half way between the luff of the sail and the mast. Here is the mizzen sail as an example, and a diagram from Worcester.

Luff-hauling blocks marked. All in correct position.
Well I also placed them in the "correct" psition on the main sail before I added the mast. The problem is that the kit wants the mast in a crazy position - bottom batten is on a drooping angle, and its below the deck and way over the side. So I repositioned the mast, and how it is attached to the sail, to get it to sit much better. Now the luff-hauling blocks are too close to the mast and get closer as we go further down the mast...
I might be able to fix this relatively easily.
If I am going to fix the twisted sheet (and I am because it is REALLY annoying!) then I might as well try to fix this also.
So...the junk is *not* finished yet...