Hi, I have an original Watsonian side car with Lambretta fitting. Does anyone know what the thread type and size is for the bolts which screw in to the top cap of the sidecar chassis fitting that sits on the top of the Lambretta frame tube? It's about 10mm but I'm guessing it will be an Imperial size. Unfortunately, I've fitted the top cap and the leg shields on top and now realise I don't have the bolts to connect the rest of the sidecar fitting to it! I'd prefer not to dismantle all the leg shields to get the top cap fitting out and have it measured for thread size so if anyone knows what it is that would be great!
Thanks