I replaced my breather hose with some a length of re-enforced clear tubing and diverted it to a breather filter right up at the back of the bike after I saw the caked up crusty mess the oil vapor made on the R/H intake valve.
I needed to add the kink that you mentioned so I filled the hose with sand and heated it in the position I wanted it to stay in - its not perfect but its good enough.
I think the tube needs to be 12mm but its not hard to measure if you move the starter out of thew way.
"an eye for an eye" - we will all be blind
(Make tea not war)