I was helping develop this and still use it as my daily rider trany/reduction. I have bought the tools necessary to make em. (Just a mill/lathe) There were some things I did not like about it. Nothing terrible but just some things that could be a little more user friendly and lack of smooth take off. But is dang sexy.
As this was for the HF 79cc, (so as to be unobtrusive to existing products and at that time friends) and now they have become unavailable, I was worried but turns out the 99cc Predator engine is the same dimensions.
Any way and with all that said should be testing the V.2 in a short while and will report.
This is not to be a business venture and will build a few after safety testing, will sell or trade for material cost and time only. I am not really wanting to get into all the crazy vendor stuff and as a mod, I really can't. So will make some for friends and folks here and there if there is any interest.