Well, the build has ground to a halt. I have done most of what I need to do to race it next year. Right now it is wintertime, so I didn't even get to ride it yet. To be truthful, Alta's bankruptcy (or whatever it is) has taken the wind out of my sails for now. I might get excited again next spring, I might not...
So much so, that I bought 5 RZ350's and am currently restoring them this winter. This will keep me busy!
If I had to do it all over. I would have not bought the Alta. I would have waited 'till spring.
I did find out the THD on the Briggs. But I forgot. Had to look it up again! Very clean power. THD of less than 3%