Finally got the next 18C mould done, the contents were
-weapons (sabre, straight sword, pistol, 17C musket and 18C musket)
-march attack musketeer
-alternate grenadier & fusilier heads.
Initial casts weren't too good, but the addition of some air vents solved the problems, some trial casts
the heads don't come out with full detail every time; will do some more and see how it goes - overall I'm pleased with the results.