Blowin' Smoke! Please Help

If you ran it rich from the rebuilt for a year you probably destroyed your rings. I see alot of cars where guys build a combo and just fire it and drive it thinking they will get it right when they get a littke more money. To much fuel is the worst thing for a motor. Does your oil get dirty quick and does it smell like fuel? check the compression and compare it to what it was when installed. Or do a leak down. You can also pull the oil fill cap off while it running and see how much blow by it has.

When the rings are bad it will smoke more cold and seal up when hot from expansion. The black mixed with blue could be there isn't alot of compression cold, And it can't fire all the fuel which is only making it get progressively worse.