I am concerned about my oil pressure when the engine is hot. I had a stage three upgrade on my 02 twin cam 88.(carb). Went with the HD roller chain conversion kit with the upgrade oil pump. Even installed the Bailsey spring.Installed an Arlen Ness oil gauge to keep an eye on things. When the engine is cold pressure is at up around 40+lbs. When hot (at idle) pressure is at zero. I had all work professionlly done.Using Castrol 20/50 non syn. Should I be worried ? or is this normal. Thanks for any input.