Jason,

I have owned many Thys rifles, the firm was truly a "best" gun maker founded on prominent hunting traditions.

I would not change the barrels or barrel length, though I understand your concerns. The rifle was regulated with that length barrel you have there, and weighted with them as well. In my opinion, if you planned to recoup your investment, assuming you bought it right, this may detract from resale, if altered. Guys at that level of moneys like the gun to be all original. As far as the forend goes, that's really simple to correct. Doug Turnbull did a splinter conversion for me on a Purdey, and it turned out perfect. They only need to reshape the forend, re-checker, and apply the wood re-finish. I think it was around $600.00

Hope this helps.