Seems the problem may be remedied ? Checking the oil pressure manually is not a major deal. Get a cheap add on gauge at a parts store and I think there is a port or plug already there. I may be selling my 39E=1 as I may have bought a new one with cab. Its one of those bitter sweet things , I know my machine ,its solid , I just hope I don't get someone elses headache. Was there much in the form of trash in any of the filters?