Yep - not much help ta! Was maybe hoping for something a little more help!!
But anyhoo, in detail, with trying to purchase main bearings from the 4 corners of the earth, I fell upon a centre main supplier from Oz, and a guy some distance from me i the UK to supply the outers, who would also build the crank. We all know how difficult the mains are to get!
But before ordering the centre and some new big ends from Oz and travelling to my builder, I got it split locally. After all, it could have been scrap and I could have already spent my money for what?!
Yes measurements were taken, but it was assumed that the pins were parallel. Also under scrutiny on the bench, this was assumed to be the case(rightly or wrongly!), hence being 99% sure. The 1% is from the comments made about the RS crank from my builder. Aaaaargh!!
Andy if you know someone that has a jig, maybe you could pass me his details, or maybe ask him for me please? That would be a great help thanks.