was swapping my stock to a 2.4 pulley when the M8 screw that comes with the VMP kit snapped (I think some is actually stock inside the pulley, all the way up there but can't tell for sure). I have a tiny bit left for the pulley to go..
There is supposed to be a small gap like that. I learned this the hard way when I snapped my pulley puller bolt clean in half. As long as the pulley is flush with the snout, you're golden. That was not a fun lesson learned on my part.