[targasc1980]

I’m (hopefully) finishing up a battle with the triangle of death on my recently rebuilt motor, and I installed a piece of generic rubber hose to replace the old, hard cloth covered crankcase breather hose. At the 90deg bend to meet the filler neck, the new hose closes up. I tried installing another hose clamp over the corner to keep it circular, but that just seems to move the restricted area. How can I get the hose to hold its shape?
Also, I’m hoping somebody can explain exactly what the functionality of the breather hose is to me. Will it be a problem if I start the engine and air may not be able to pass easily through the hose? Thanks.