Have PPE Hot Plus 2 in 2004.5 LLY.Just installed PPE Modified fuel Rail. Started up and have an engine misfire. Diagnostics say Code 301 - Injector misfire on No 1. Checked further diagosis on PPE shows injector No 1 idling at 10.4-11.0 Ms while all others are between 4.5 and 6.0 Any help appreciated. Also is No 1 on Duramax same position as Gas Engines? Thanks