I'm not sure why you are taking offense Dino. While I may not be being terribly respectful in your eyes, it is only through frustration, not because I am selling some other engine or whatever. I don't sell any engines at this time. I am in fact a customer.
My frustration also comes from your lack of help in regard to this. If you wanted to speak privately I would have been happy to do so. But to just say 'tough luck it's manufacturing tolerance' is not telling anyone how you are trying to improve the product.
I have had to turn to another motor tuner to try and get some answers on how to best resolve the issue of my motor having a 3.75 degrees difference in port open/close due to .2mm 'manufacturing tolerance'.
I would like to work with you in making the product better but when you offer no advice, there isn't much I can do.
Customer service is what keeps people interrested in a product as much as performance does.