280SL White Smoke on Warm Starting and Acceleration

[ja17]

When intake guides are loose, oil enters the combustion chambers and engines smoke even during cold starts. When exhaust guides are loose, oil never enters the combustion chambers but drops into the exhaust manifold and may not smoke until the exhaust warms-up.

[w113abudhabi]

The cylinder head rebuild is now complete and I hope to have the car out of the workshop very soon in time to enjoy the pleasant winter weather here in Abu Dhabi.

However one area of confusion exists. The car runs well with the original ball studs in the car. The original ball studs require a 17mm spanner to turn when adjusting the valve setting. The replacement ball studs that were sourced do not require any spanner to turned them and can be easily turned by hand. This resulted in the valve clearances changing after having been initially set.

My mechanic has returned the original ball studs back into the car. Can anyone advise as I currently have a set of costly replacement parts not in the car. I am afraid that I am not the most technically minded in this area.