This is my first time posting to the forum. I have a 1999 k2500 suburban that has been 0411 swapped and a roadrunner installed. The engine is a BBC 427 with aluminum Pro Topline heads and a Comp 11-772-8 camshaft. The intake is a dominator style with a holley efi 90 degree elbow and 110mm ls1 style tb, the injectors are boesch 42lb/hr, and since this is a gen iv engine im using an msd hall effect crank trigger on the damper. I have suddenly developed a problem where the fuel trims long term and short term are seriously off, Bank one will some times show more than +25 while bank two will show around -8. I had a leaking intake gasket and was thinking this was the cause i replaced the intake gaskets with no real change, also i have checked the exhaust over and cannot locate any kind of leak in the system. One question that kees coming to mind is that since its a mechanical roller cam could valve lash cause this? I will include the last log i made and a copy of the tune. Any help or advice is greatly appreciated im beating my head against the wall