[Trackrash]

It could be the seals or even the rings. The big question is does it use oil between changes? If it is not using more than a quart say every 1000 miles, you may want to let sleeping dogs lie.

A blue puff on start up is not unusual. Every time? After sitting a while? After parked on a hill?

When fully warm and idling, is there smoke coming out the exhaust?

In some cases, the ring gaps can let oil into the combustion chamber when the car is sitting. This is made worse when the oil tank is filled up to maximum or when parked on a hill.

The smell sounds like a leak dripping on the exhaust, AHIK.

As far as the cams and rockers go, keep them in order, so each rocker goes back on the same lobe. As long as there is no pitting or obvious wear there is no need to have them resurfaced.

Re-ringing is a subject for an entire thread.........