Just picked up a Kodiak .58 from a friend and am planning on re-modeling the stock- especiallythe cheek piece along with a re-finish. Ron - yours looks good as to stain and finish.
Primary change will be to reduce the height of the nipple seat (if possible), along with using lower 'pistol' nipples, to allow the curve of the cock'snose to stop lower over the top of the fence.

At 10 1/2 pound, the full length gun is needlessly heavy for a little .58.

The owner returned the gun to Pedersoli, complaining of the terrible regulation. The new 'set' of barrels regulate perfectly parallel at 50 and 100 yards, which is amazing- but only with a light load of 3 drams and a round ball. It will be interesting to find out what happens with increased powder charges. I want, nay, demand, 1,800fps. We'll see what happens.

Shortening the tubes to a more 'normal' 26" was a good idea & I may end up doing just that as well, partially to reduce weight and to improve handling by moving the centre of ballance back to the hands.