Each kit does not "NEED" a set of bushes. Yes they may be desirable but as I said can easily be made for no cost whatsoever by anyone with enough skill to turn a cylinder on a lathe. Otherwise don't use them at all and turn between centres.
Anyway Paul, I'm not going to argue further as I've repeated the same point several times I guess agree to disagree is the way forward. This is a great forum and usually very helpful and good natured unlike many others which is why I'm not going to add more to this thread. I want the forum to stay that way.
Interesting that in the couple of months and 30 odd posts since you joined there seem to have been a number of negative posts.