1&2, check your block.lua file ,the series blocks should keeps same state data,
or you may share the mod here , i may check it later.
3, the block cant set below 1 mass , so you should keep the size*density=mass >1
also ,the ISOTRI_3 shape may cause serious blueprint broken , due to ports near the tip are too close against each others , avoid this shape as much as you can
4, for default launcher set , [GEM_LAUNCHER\HEPTAGON_LAUNCHER\SQUARE_LAUNCHER] are radial launcher , the else is non-radial launcher (only straight shoot forward ),
as non-radial launcher with side launch_out port as RECT_LAUNCHER ,can only capable with shape has missile port on the side (like MISSILE shape) .
so you can see the mod example here :
https://steamcommunity.com/sharedfiles/ ... =916026798