Quote Originally Posted by Dr Terry View Post
That documents has 2 different dates on it & mentions HX, HZ XX7/XU3. The dates are Feb '76 & Feb '77.

Could it be the HX document updated with the HZ changes ? E.g front apron.

Dr Terry
Take a closer look.... front apron and bottom of guards is HX only..CD2A96FD-2F8E-4D12-99EF-1B00320DDB03.jpeg