Problems. Poll: Keep or sell?

[biomimetic]

Bought a 2005 n62 e53 back in Feb (from Hansels in Santa Rosa, CA in case anyone is curious) to keep for a year or two while life is complicated by moving and small children etc. 1 owner car with a high consumer rated buy number on this specific X which has turned out to mean nothing. There was a waterpump replaced before my ownership (apparently at trade in). Dealer told me the car needed to be smogged when it pulled lean run codes on my Peake reader. Not true - and since they have disavowed warranties, and things found during them orcany implied serviciability, etc. Since I have found a warped valve cover and a broken tap in the rear of one of the heads along with JB Weld and a big mess of hidden broken bolt. Clearly perpetrated by the dealer Hansels. So a new head and all the fun of the 5-8 side. Does not appear there are any other helicoils or more mess but I am concerned about the metalurgy being weakened, etc. I dunno... What do you guys think, money aside: keep or sell? Would you drive it across the country?