To Adjust or Not to Adjust
Have we missed something here.
Perhaps the manufacturers may wish to comment on 'factory set' I seem to recall that most were set to a bench test condition not rated condition.
Not a lot of difference and the tighter your system match the better . I always check the superheat and do adjust that's the way I was taught.
There are some people out their that say automotive spark plugs are factory gapped. Fine for the factory but in some vehicles well wrong. One size does not suit all.