Charles and Boyle calculated "gas laws" based on pressure, temperature, tube size, tube length and so on. There are lots of other gas laws engineers use to calculate the correct size for gas blocks. To add to all the other variables, now we have guys wanting seven inch barrels, Engineers do this for popular lengths of ARs. They have done the thinking and calculating. Re-engineering a machine is going to cause problems or may cause problems everywhere. Successful seat-of-the-pants engineering usually happens when the product is poorly engineered to start with. Like a Chevy for instance. People hot rod Chevys because they were crap to start with. Try that with a Mercedes and there will be tons of problems.

Gas Laws
https://en.wikipedia.org/wiki/Gas_laws

Every time one of these engineering companies comes along with non-mil spec parts which they claim are better than mil spec and you start stacking these in an AR, how can there not be problems??????? Explain it to me again.