I have a 2006 WGlide with V&H Big Radius pipes and Screamin Eagle air intake. Added the V&H fuel pak at the recommendation from a Harley tech. He had one on his bike and said it would prevent burnt valves in the long run. Seemed to make sense. The bike runs strong and much better top end. But when tooling around 30-40 mph the engine chugs. When I slow for a curve the engine somtimes spits and coughs. Drives me nuts. V&H has made their recomendations at least 4 times with no improvements. Ready to turn it off. Any thoughts? Will long hot trips burn the valves without the tuner? Thanks!