L-body '86 log with MP computer and '88 roller cam/followers. Runs great, but smokes on deceleration (none noticeable on accel.). I did recently refresh the bearings and rings and replaced just the valve seals. The head has never been reworked. I've checked that the oil drain line from the turbo is not blocked and is flowing oil to the block (verified this line also). I dont have a picture of the plugs at this time, but they do have a bit of dry fouling/deposits on one side of the electrode. Pistons do appear to have some oil on top. Is there any way to say for sure what the issue is before I purchase parts?