38' C&C Landfall 38

We are selling our C&C Landfall 38 sailboat that we have owned for the last 11 years and lived aboard for the last 2, because we have recently purchased another sailboat.
Overall, the boat is in good condition for the year.
It has an original Yanmar 3HM Engine that starts well and has good compression on all 3 cylinders. After sitting at the dock for 3 months last year. it has developed a power issue when under load. Since then, we have polished the fuel, changed both fuel filters, installed a new fuel lift pump, installed a new air filter, had a diver check the prop was not fouled and clean of barnacles. We have had all fuel hoses removed and cleared with high pressure air, removed, and cleaned the fuel intake from the fuel tank, replaced all 3 injectors. One injector could not be removed, so we had the head removed, had the head dipped in acid to clean it and replaced everything with a new head gasket etc. We have removed the mixing elbow to check it was 100% clear, checked and cleaned the exhaust manifold. Removed the fuel tank, emptied it completely, cleaned the tank and replaced with fresh and treated diesel. Checked the fuel tank vent pipe was clear. Replaced all the hoses from the exhaust mixing elbow to the exhaust outlet with new hose. Replaced the exhaust muffler/water lock with a brand new one. Changed the oil and the oil filter. Had the valve lash double checked. Done a compression check on all 3 cylinders. The prop shaft turns easily by hand in neutral and the engine alignment in good. When the prop shaft is disconnected from the transmission and we perform the same test, there is no power issue and it changes into and out of gear easily, so we know the transmission is ok.
After all this time and investment, we have been advised the power issue is to do with the fuel injector pump. We have been quoted $600 to service the pump and $750 labor to remove and reinstall.
Because of this power issue we have priced the boat appropriately and are open to reasonable offers.
The boat is very comfortable inside and sleeps 7 (6 easily).

It has a brand-new windlass (never used).
It has a Danforth anchor with chain and rope.
The sails and running rigging are all in good condition and it has a Harken roller furling system for the jib.
The lifelines have been replaced with stainless steel and are in good condition.
The boat has a in board fuel polishing system.
It has a small GPS chart plotter and a VHF radio.
It has a brand-new Whale manual bilge pump and 2 electric bilge pumps.
The 2-burner stove and oven are in excellent condition.
There is a separate gas grill.
The boat was previously owned by a professional sailmaker, and it has a barely used full boat shade cover ideal for the Caribbean (or even North Carolina sometimes!)
It has a functioning head and clean holding tank.
It has 3 freshwater tanks holding 107 gallons, with a new water pump and many of the pipes have been replaced in the last 2 years.
The boat is registered with the USCG.