Does anyone have a source for parts for 1/500 metal/wood models such as Comet, Framburg or South Salem? I'm looking mainly for US WW2 Cruiser and Battleship Catapults, A/C Cranes, quad 40mm tubs & 20mm sets or singles. Not looking to super detail, prefer original style metal or copies, but plastic (discarded from kits?) 3D Print or PE will be considered. Scaled within range of about 50 points (1/450 -1/550) might work as many models made were odd (box) scales. Just trying to improve look by relpacing missing parts. Thank you for any information.