There was an issue with the barrels (the original sculpt of the barrel collapsed in the mould and had to be remade). I'm hoping Andy has/will fix(ed) this.
Having done 16 of the things, I can definately say it took me probably under a minute to do each barrel with a coarse file. But that's stilla quarter ofan hour I didn't get back :(
Irritating, I know, but safer than trying to cut the resin.
When you give the metal a dozen or so strokes on each side (depending on the coarseness of your file, obviously) they goin a treat and that area you've just been filing is hidden by the resin mantlet so you can afford to be quite brutal.
I did a few at different elevations as well by – in one case – filing some metal away from the barrel rear to enable the gun to raise up high enough.
Hope the shots help – oh and one of them has deliberate damage (the multi-coloured discolouration of the iridium).
Also link
and link
John T
PS – some of the shots of painting completed the week before Salute are waaaay to close for my comfort but they are what I had todo to get them ready in time!