1. Injection direction
This area is OK , because the pin into the tube have a supporting point in this area .
The injection force push the pin to the other side and out of middle position , so the part was not fulfilled over here.
See next page for details .

2. left
This area have defect
middle
This area have defect
right
This area is OK

4. The pin have not a supporting point in this area .
We are changing the gate location now , And we will try to inject again in the afternoon .
Injection direction
TUBE
The injection force push the pin to the other side and out of middle position , so the part was not fulfilled over here.
The pin have not a supporting point in this area .

5. assembly
Have a few gap

6. Inner diameter is inch
outer diameter is inch
The gap of assembly from your drawing is 0.41 mm