My 388 stroker blows some blue smoke at 5000 rpm and up. Motor does not burn oil at lower rpm's. I have the stock Edelbrock jetting on secondary,metering jets .107 with .047 metering rods. Do I need to richen up the mixture on secondary? It has a Comp Cams XE268 cam with 1.6 ratio roller rockers, 10.2 to 1 compression, 200cc iron eagle heads, edelbrock rpm intake, headers, 2.5 inch flowmaster exhaust. Plugs look medium dark grey when checked after cool down. I was thinking valve float put do not notice any power drop off. Only 3k miles on motor, running 15-40 rotella oil, any ideas? I am surprised the secondary has smaller jets than primary (.113)from the factory. Timing set to 12 degrees inital and 36 degrees total.