Thanks again for the kind words guys,
Dsiwy; the stock is bedded at the rear of the receiver and at the barrel receiver junction. I use Devcon 1010 epoxy steel for this. It's a really tight fit into the stock and the trigger guard must be tapped into place with a wooden mallet.
I'm not sure about barrel floating with the SKS. The way the gas tube is fit I don't think you can really float it. Right now I'm experimenting with shims under the barrel right at the end cap to provide a tight fit and pressure, more like Garand or M14 tuners do.
If this worsens the groups I'll try the opposite tack and file down the stock were it meets the end cap until there's no contact. I also will try shims between the barrel and gas tube. I think overall, tightening up the SKS might be more productive than trying to float it.
Robin