once you get it running good add some 2 stroke engine oil to the fuel. 1 pint per tank. i've heard from alot of diesel guys that the added lubricity helps the fuel injectors. ULSD is no where near as oily as the old diesel fuel, and can cause the injectors to bite the dust prematurely.
"I don't have pet peeves, i have major psychotic fucking hatreds" -George Carlin