Burning Tranny Fluid

I'm still workin on my 90 Camaro Iroc w/ 350. I have changed my tranny fluid 3 times in the past 2 months or so. For some reason the tranny fluid is burning. I've had it flushed the 3rd time to make it wasnt just old fluid in there. Still burning though. Can anyone tell me what causes this?? Is it something I can fix? Thanks in advance!!

Sounds like it may not be circulating through the radiator to cool down.