Destroyed my Jockey jack ...

Hello, despite my efforts to restrain my jockey wheel, it fell and I didn't notice and it rendered the jack useless. I'm sure it can be replaced, but I'm wondering about the tongue assembly. It doesn't look damaged, but the shim that compressed the jockey into a height is broken. Since it is a shim, perhaps that's the only replacement, apart from the actual jockey itself? I searched here, and all I found were about replacements. What's your advice on replacement jockey and what to watch for a shim replacement?, thx, sam