Originally Posted by raasayphil
I suppose that's the easier option but I suppose the big question is if they got the spring mount wrong, how do I know the trailing arm brackets are in the correct position?
So let's assume your trailing arm brakets are in the right place as the chassis is built on a jig. You'll not know they're not until you've got the car built and have it aligned on a 4 wheel alignment table, but its more than likely they are OK.
It's more likely that just the threaded rod is welded in the wrong place, which leaves you two options (maybe three?)
1. Just crack on and leave it alone and see if it causes any problems once the car is on the road. It doesn't affect the vertical motion of the trailing arms and unless its a long way off I can't see it doing much than maybe wearing out the rubber spring seats prematurely.
2. Move the lower spring seat, like Robin did. Just respray it with hammerite smooth finish and you won't notice the difference once its all bolted up again (honest!)
3. Maybe hit it with the BFH, as Mark suggested. But that is effectively the same as option 1. above.
I wouldn't use the eccentric bushes as they are to correct toe in, which could just make your handling worse.
Was the Biggar car rally good?