Got an 08 Ural. It coughs and pops and sputters when cold. Needs a good warm up, say 5-10 minutes before that goes away (mostly). I am going to shim the needles when I get around to it but I tried something yesterday. I let it warm for say 2 minutes then rode away with the enrichners pulled open. It ran great. I only rode a minute or so with them on then pushe em in and the coughing came back... Is riding with them open for a bit gonna wang up anything? I think the book say's use em to start then close them right away.