I bought a 2003 year produced italeri kit. It has all 4 holed wheels for road and idler ones indifferently. From the gallery pictures, previous opel maultier kits had 6 holes for them. The instruction sheet, however, shows that idler wheels have 6 holes and different shape. The Royal Model seems to think so.
What is right?

1) 4 hole RW + 6 hole IW
2) 4 hole RW + 4 hole IW
3) 6 hole RW + 6 hole IW
4) it varies according to the availability of wheels