Your welcome,
The more people we can get interested in the hobby the longer it will last. if you mean the bracket for the rudder support then I modified the piece you are enquiring about too , made it out of flat brass plate, you can use the plastic one as a template then cut it out of brass and bend it to shape, I have added a couple of pics of mine, the central support is brass tube soldered together with a central bolt holding it all in place, 3 pieces I think. hope the pics show you enough.
If you mean the prop shaft support infront of the prop, then brass tube to the size of the shaft about 4 mm long one for each end to act as abearing and a piece of brass tube to go over the two then solder them in then solder two pieces of brass tube of the correct diameter at the right angles to it for the supports long enough to go into the hull, then glue the supports in place into the hull with the prop shaft in place to hold it at the right angle , I would use stabbilitt express for this job it is an excellent glue for bonding dissimilar materials. Hope it all of use ??
Sub.
Ps you can make a wood mould the same size as the weights you need then melt some lead pieces and fill the mould and let cool
PLEASE MAKE SURE THAT THERE IS NO WATER / MOISTURE IN THE MOULD WHEN YOU POUR THE LEAD IN OR IT WILL EXPLODE...AND ALWAYS ..ALWAYS.. WEAR GLOVES / OVERALLS AND EYE PROTECTION..