[Rich Biebel]

A bad converter would not act like the tires spun....it would act more like you left in second gear...They tend to lose stall speed and get tight and make a car leave very lazy.....

That Dexron VI fluid should not be an issue

When I had a Metric trans I did burnouts starting in 2nd and quickly shifted to 3rd...but that should not really be a cause for a problem.

Sounds like the trans may have lost first gear....or fluid level is low...

Does the ATF fluid look clean and the same color as it was....?

Any slippage in a trans quickly turns the fluid dark and may smell burnt...