Thanks! and i mentioned the sync when i first did it. but i think the extent of that topic ended there. I tried with some vacuum gauges but I guess it was worse than I had expected. My friend is in the process of buying a bike and then I think we will learn how to do the valve clearances together.

 

Good idea, on the valve checking, especially if you're at over 16,000 miles, and don't know if the first or second checks were ever done.