What to do...
1) Decide if it's worth your time, money, and frustration to have a smith "fix" the single feed issue.
2) Bed the action and free float the barrel. To get consistant accuracy, this has to be done. As you mentioned, it shoots best with the front rest as far back as possible. This is due to the pressure it puts on the barrel as it's not free floated.
3) If you're willing to deal with the first 2 things, then you need to decide if you want to spend more money on a new stock and trigger.
If the above is not in the cards, then I say sell it and use the money to buy something else.
"Laws that forbid the carrying of arms...disarm only those who are neither inclined nor determined to commit crimes...Such laws make things worse for the assaulted and better for the assailants; they serve rather to encourage than to prevent homicides, for an unarmed man may be attacked with greater confidence than an armed man." - Thomas Jefferson, 1776