First, go to a different dealer. Have the prob. diagnosed. If it is the hose, Call up Aeroquip. Order a new STAINLESS hose in the same diameter and size as the OE unit. This may help with the rigidity. Well, running lean may cause some probs with your engine over time. I wouldn't worry about it. Nothing may happen and you would be worrying for nothing. I truly doubt that 30 miles hurt the engine. One of my buddy's track cars ran for a whole year running lean and it was running hard. Call up Karl at AA and ask him about Junior's 328 race car that he did. As for software updates, you are wasting your cash and you need to get it back!!!! Hope this helps, JP///M3.2