RE: 4 cycle lubrication
The problem with these is that it is usually the valve guide in the head and not the valve itself that is the problem,
also ASP/Magnum valve springs are very weak compared to OS valve springs
Another situation is that Magnum/ASP parts quality control is terrible. I suppose their final QC is the person putting the engine together at the factory?
I ordered two valve sets from Hobby People for a 30 and the valves were cut to the wrong length and I could not use them. They must have been rejects from the assembly line at Sanye?