Hi I’ve removed EGR cover only to find one of the tiny roller pins with very small circlip in side the alloy casing it’s come off the Brass EGR valve and the other side one has come off as well with the circlip attached these seem to connect to the centre pin of the Brass EGR valve my question is can these be put back in has anyone done this or know of this I took it off as I had fault code p0490 or is it now a case of replacing the whole inlet manifold from a scrapyard any help would be greatly appreciated
cheers Jez