Well done, only a couple of hints
1 make sure cam is right way round so the tacho drive works, i am NOT admitting to why that one
2 some jointing compound under the pontefract cakes or pucks as our us cousins call them!
Thanks for the tip, I've ordered some jointing compound, so a days delay. I can continue work on the back wheel in the meantime. I had to double-check the cam shaft!