Hi all, here I am again to tap into the unlimited knowledge of this forum.

I've been driving my 911t occasionally after it has been sitting for 30 years (with the PO) I did about 3 to 4 short drives. But I feel the engine is lumpy and has trouble revving. I've send the video's below to a specialist he says it runs on 5 instead of 6. But people who hear it live say, it's low on idle but runs on six but just needs a balance and a proper tune.

The settings are done using this video, but I do not have such a fancy timing light.

I've tried my best setting al the settings correct, but I also know this is specialist territory. That being said, I'd like to learn more about my engine by doing things myself.

What do you guys think?

Can I fiddle with it to get it better, or leave it up to the expert(s)?