second gear grinding

[aceplayer25]

I have a 97 cobra with the T-45 trans. I noticed when I take off in 1st gear,run it up anywhere around 6000rpm, not speed shifting but just normally putting in 2nd gear it grinds. It seems like I read somewhere about people having this problem and changed the transmission fluid to a different kind that it helped the problem. Has anyone heard of this? I bought it from an old man a couple of months ago with 33000 miles and stored in his garage most of the time, it still had the FACTORY (dry-rotted tires) on it.This car has not been abused. I just purchased 3.73 gears and Tri-ax shifter that I will be putting in next weekend and would like to solve this problem before I do these installations. Thanks for reading, hope someone has some answers.