I’m sure you are being modest .
But at least you acknowledge that factory heads can work just fine with a nice massage .
Factory stock just didn’t have the man power available to work them well .
They were production parts,,,,only so much can be done on the machining process .
Yes,,,,in an all out race environment,,,they come up short .
But how many factory components don’t come up short ?
For what they were,, very good heads,,and more than enough for 90 % of the end users .
Thank you for showing this .
Tommy