I recently bought a Heller Karas on Ebay, and it has a damaged canopy, as if it was torn from the sprue. Does anyone make a vacuum form replacement or do i just keep it for parts and get another one?
Not to my knowledge, I’ve never seen one.
You don’t need to buy it from E-bay, it is now sold under the SK Model label.
www.jadarhobby.pl/sk-model-pzl-p23ab-karas-172-p-31650.html
There are two sets of PE for it made by Part (Eduard also made a PE set), interior and exterior I think.
www.jadarhobby.pl/part-s72080-pzl23-karas-pe-172-p-388.html
This set looks like it has the framework for the canopy, presumably for plastic film windows. That might solve your problem.
www.jadarhobby.pl/part-s72081-pzl23-karas-pe-172-p-390.html
There are also two sets of decals.
www.jadarhobby.pl/techmod-72124-pzl-p23ab-karas-decal-172-p-10288.html
www.jadarhobby.pl/techmod-72125-pzl-p23b-karas-decal-172-p-10289.html
Good luck with your project.