Are you running any oil coolers for your ER34? If not what are the normal oil temp you are getting? I'm getting circa 110 degrees on prolonged high speed runs (circa 180km/h) and it's worrysome.
i want to add a breather filter to my oil catch tank..but i find the filter is too big..out of proportion........been looking something small stuff to replace the filter like a pressure air valve or a small breather...