As Mike says.
In fact, you may find it easier to scratch build a more accurate trunnion (Pivot and support) than fiddle around with the brass bits - if you do decide to go this route, I strongly suggest that you make two at the same time to ensure that both carronades match up.
I made mine from bits of spare styrene sheet and rod - but you could just as easily make the bits from spare bits of wood and some of that brass wire - just remove the lumpy square sectioned pivot part from the bottom of the barrel (it snaps off quite easily as it's only glued on) and file a shallow groove (using a round needle file or rifler)which will then sit on the pinion as shown in the above picture.
Another feature of the supplied carronade that may cause a raised eyebrow is the rear wheel arrangement - the wheels are a tad oversized and when fitted into the etched brass rail, lift the rear of the carronade higher than the front.
A simple solution would be to dispense with the brass part that holds the wheels and carefully glue the wheels into place using superglue - being careful to get the alignment right - they both face to the outside lengths of the carriage - not to the front (you won't even notice the absence of the brass bit when the build is complete anyway).
As a modeling exercise, the fiddling around with brass bits has a value - but as a part of the model itself.. (I'll leave you figure that one out).
Schnellboots on back burner
Tools.
US
