That’s great news, Diane! No need to worry about putting the cross back in – it’s all in order and spread at the right width on the loom. I’d gently pull your warp over the front beam and slowly wind it onto the back beam, adding your new paper as you go. This is a case of having to adjust your tension issues as you are winding back on. If I’ve had a problem with tension in a warp, I wind it on using another of Jane’s methods that she demonstrates in Louet’s YouTube video – Warping your loom – Part 3
That will be a slower method but you should be able to get even tension on the warp as you wind on. Look forward to hearing about you successfully weaving this warp 😀