Alright well I turned it ever so slightly out and it is all well now. No more hanging and the engine brakes properly 'Thanks for all help!
ROR, you are a smart guy. I think we mean the same. Just wording different. How do I put pics up on here. I would like to show off my Jetta and show the pin I want to put in my pump. and my boost triggered advance set-up
I have this very problem of hanging the accelerator on upshift. Time to go play with the screws for smoke, idle and retime I suppose. Just had the injectors rebuilt as I thought that might be the problem. I did see leaky fuel in two of the chambers when I removed them. I also have a difficult time starting it and once it fires it is very smokey. But goes away and no smoke at high rpms and long hill pulls. Very confusing symptoms so it seems. One set of indicators points me one direction but then another set says no, don't go there.Have to love them diesels though. Keeps me out of the bars.