Thank you Lee, Barry
This post is for the planning of the crew, and basic assembly and positioning of the arms.
The sFH18 is a heavy howitzer. The 15cm ammo came in two separate parts, shell and cartridge case. The shell alone had a weight of 44kg or 96 lb, and is quite large.

- RC 1/16 Sd.Kfz. 165 Hummel Late Production - Build
The single crewman responsible for loading the shell needed strength and a method for lifting and charging the gun.

- RC 1/16 Sd.Kfz. 165 Hummel Late Production - Build
These are the Modellino 1/16 scale gun crew made of resin and metal.
This is the loader, responsible to present the shell to the breech. The original design of the pose is questionable. I need the loader to hold the shell, not to singularly push it into the breech with arms up in the air. I doubt this was achievable anyway with a 100lb shell... I therefore had to reposition the arms and shell lower, closer to the body and in a way the loader could spread the weight across his both arms.

- RC 1/16 Sd.Kfz. 165 Hummel Late Production - Build
The arms are in some kind of alloy that allows to repositioned the hands a bit by slowly twisting them in the desired position.

- RC 1/16 Sd.Kfz. 165 Hummel Late Production - Build
This crewman is responsible for pushing the shell into the breech. No issue but the arms were reposition so that the tool is held higher.

- RC 1/16 Sd.Kfz. 165 Hummel Late Production - Build
This third crewman is responsible to load the cartridge case. I repositioned the hands holding the case up, more to my liking as i am guessing the cartridge case would normally carry the shell propellant at this stage.

- RC 1/16 Sd.Kfz. 165 Hummel Late Production - Build
At this time, the arms are just positioned, superglued and reinforced in place, next will come the putty and sanding job.

- RC 1/16 Sd.Kfz. 165 Hummel Late Production - Build
Checking the position of the crew inside the fighting compartment of the Hummel. Looking good. I am still wondering if i will permanently glue the crew in place while still allowing the gun to elevate and recoil, or just put them in place for static display.

- RC 1/16 Sd.Kfz. 165 Hummel Late Production - Build

- RC 1/16 Sd.Kfz. 165 Hummel Late Production - Build

- RC 1/16 Sd.Kfz. 165 Hummel Late Production - Build