Hi Dave, I was reading through several posts and noticed that many are about the .63s and bad regulators. Was it just a learning curve? Has the problem been addressed??

I do want to order one, but I'm concerned that as soon as I get it, I'll have to send it in for repair.
If newer engines have had this problem corrected, is there any way to be sure that I'm getting an engine from the new batch (serial number, stamp date???)

Thanks
Shawn