I have been working on my vacuum hoses and breather hose to make sure I have no vacuum leaks. Everything is running great, but I am replacing all the hoses anyway, except for the formed cloth covered hoses (decel and breather). Using all cloth covered metric hoses to keep an original appearance.
On the connection of the breather hose to PCV, I could not push the hose on fully because of the distance of the "pipe" to the main body. Just not enough clearance.
Of note, I removed the breather box/PCV and cleaned and tested the diaphragm and was lucky in that mine is GOOD! But, even with my nice clean box and original hose, there was not enough room to get it fully pushed on, and certainly not enough room to slide on a clamp or zip tie that would be straight.
The PCV is mounted to the box by two bolts with an o-ring to seal them together. I wanted a little more height away from the box so I made a gasket out of cork and left the o-ring in place. By the way, again lucky, my o-ring is supple. Anyway, it added only a little height, but it's enough to push the hose fully on.