Fueled up the new Vista with 30:1 and it started right up after poping a couple times to tell me it didn't want no damn choke. It ran evenly and idled nicely albeit a bit fast. Went around the block at about 15-20 and parked it. Will check the headbolts in the morning.
FWIW, I found the included sheet metal plug wrench turns the drive sprocket to thread the chain. I did discover when I shortened it and inserted a half-iink the pins on the supplied chain are a bit larger than #41. For now I am using the idler roller, but may adjust it to eliminate it later