200 with screw in the crank????

[ramcclure200]

I have an 04 ec200 which stopped running last weekend and I found the screw for the crank counterweight lodged inside of the motor which as the result I have to rebuild the motor so that I can ride again. Its looks as if this isn't the only one to do this? what have the rest of you done in this predicament? A breif list of damaged goods: Cylinder, Piston and crank needs to be repaired.
Does anyone know of a place to get crank repaired, preferably someone who has worked on this crank before so that I know it won't happen again.
Someone mentioned a company for the cylinder repairs called Langcourt, has anyone had experience with this company?
So far as the piston, gaskets, etc. I can get from GoFasters.
What bums me out is I just got through replacing the piston to freshen the bike up
One more thing, how about a service manuel? does anybody know where I can get one?
Thanks in advance for help