Yo T33,
Whatever you do don't try and build the superstructure using their template pack! Looking at your very high standard of build you will do a far better job on your own. I have built the following MMM tugs over the years-Norton Cross,Tid,Portgarth,Eldergarth and my own rub on a Norton cross hull (twin screw & Bowthruster) as I remember each of the hulls needed quite a bit of work to get to the standard I wanted involving a lot of time and effort on my part. Re the finish on the Kort nozzles its not good especially for the price you pay and if you think that is bad wait until you look at some of their funnels, the ones that came with my Norton cross kit were absolute rubbish I had to set out and square off the bases to both and reshape the angles so that they matched reasonably well. As to the alleged "ready to use" finish I think they had been roughly trimmed on some form of belt sander with a 40 grit belt. The white metal bits were also crap so I ended up making most of the bits and pieces. I think the problem lies in the moulds being too old and over used without renewal.
Your build is a very high standard and you should be proud! Good luck with the rest.
Cheers, Pete.