Al l was slow to get onto the PWK's, thinking "l can make the stock carb work ok", l did get the stock carb working ok, but l read so much on the internet that the PWK Airstriker (with air channel guides in intake bell) transforms the big CR's. l figured l'd give one a go once l saw them on ebay for only about $50, man it's only a block of alluminium that mixes fuel & air together, doesn't matter what country it was made in, l'll make it work.
The benefits of the flatslide really does make a difference over the stock aircooled round slide; she rips from the bottom-end so strong & quick (like the bike really needs that ?!!!!!). Bigger buzz than any ride at a carnival ;-)
The PJ carb on the '85 CR, l read, to be a problem carb, like they say about the '84 round slide, any '85 l've ridden (125, 250 or 500) has always work well in my eyes.
Just get out and ride Al ;-)