I will add one nugget for everyone in the community to think about - ethics - and future handling by the community (yes, all of us) regardless how this story ends (hopefully happy for all involved).
Anonymous emailers: Let's assume (which I pray is true) everyone wants Kevin to be successful in delivering a Predator pinball machine. With all the right intentions, community member(s) discovered and validated an issue so impactful it would jeopardize fellow hobbyists money and likely risk of Predator ever being built. The ethical dilemma for them, do they post that info on pinside likely starting a panic and run on the bank by owners requesting refunds - possibly viewed as the unintentional villans? Or do they secretly and selectively send anonymous emails hoping it leaks and never boomerangs back to them?
Suggestion (to be debated): I appreciate what you did but man up, and own the info. You added so much drama when the situation didn't need it. It clouded the validity of the information, casted more doubt and angst. Credibility is what was needed to ensure all owners knew the train may be coming off the tracks and let them decide to stay in or out.
Recipients of the anonymous email (full disclosure, I have copies too): The dilemma is do you post information on pinside that comes from an anonymous source, lists accusations supposedly validated, but written in a way that casts doubt (by the way different versions floating around). No way to validate with authors so left to go direct to the source - Kevin - which they did. If you post that email and it's complete BS - you've created a run on the bank based hearsay - and may cost Predator from ever being built.
Suggestion: Some of info in those emails appear to be turning out to be factual and some BS. Kevin has stated he is trying to remedy some issues with help - that help could have evaporated if the community made a run on the bank before the hail marry pass made it out of his hands. Timing. I do think transparency should have reigned on this one. Kevin ultimately withheld info. The anonymous emailers shifted the ethical dilemma onto other select insiders to break the story but without a credible source to confirm. Thus why people are waiting to validate accusations and try to help salvage behind the scenes. It should never have gotten to this point.
I believe when pinsiders money is involved and someone in the community knows "factually" that's at risk we should advise each other after first discussing it with the faulting party. There is a lot of grey area in this one, but then what is the definition of "community"??