The forged crank is the BEST you can get, I never knew this bike had one. The ZZR makes 40Hp at the crank. This engine was designed in 1984 & thus puts it ahead of all bikes until 2005 in power terms ! It makes 160Hp/Litre since 1986 where as Litre bikes only started making that kind of power in the mid 2000's, so its a stonking engine for a 2 cylinder 250
I'm hoping my bigbore 282cc will make around 40Hp at the wheel when I get round to it
Hope you get it sorted soon.