'98 GG EC250 motor rebuild Q:s

[slocalspode]

Maybe someone can help me out.
Last ride my GG suffered some kind of internal engine failure.
Pushing down the kick starter, it started making a clank,clank sound.
Much like the ratchet sound the kick starter makes when returning
back up. At first I thought the problem was inside the start
mechanism. The motor started and I rode home. I did not hear
the clanking sound on the ride. Exhaust sound must have hidden it.
Removed the left side engine cover, water pump, etc... Spinning the
engine over by turning the clutch basket, and the sound is clearly coming
from the bottom end.

My assumption it is a big end rod bearing or the crank main bearings.
I'll pull the top end off soon and see if I can see any play in the crank.

So I am going to need to do a full bottom end rebuild. Might as well
replace anything that might be worn so as not to have to split the cases
again the the near future. Might as well replace the piston and small
end bearings, water pump seal, etc....

Does anyone know a mechanic familiar with the GG engine in Southern
California? I do not have the tools or skills to split the cases.
Only mechanic I know of is Steve Marolda from MotoWest. But, he has
not been in business with GG for over 10 years.
He mentioned that he has no idea where to get GG parts anymore.

So can someone suggest a parts dealer that I can get the parts to do
a full bottom end rebuild?

Thanks for your suggestions.
Jeff