Finally received a reply from HH in regards to cracking heads, verbatim.
"Hello,
From what I can tell there has not been a large amount of this happening that would warrant a rework. Ultimately, Saito Japan is responsible for making that decision. If you do decided to go with the Saito 60cc R3 and you happen to have a problem, our service center is prepared to take care of any issues that might arrive.
Thank you"
Still trying to decide if i pull the trigger. so tempting, yet so not at the same time......