slippin clutch?

[dewthis]

The problem is when i hit about 5500-6000 rpm's it seems like the car is not gaining any speed. It only does it in first and second gear. It really seemsto pull hard in third and fourth gear? I did the ze swap and put a Clutch masters stage1 clutch( it came free with the car). I know everyone recomends at least a stage two. any help would be nice, i guess if i have to i will bite the bullet and get a new clutch and maybe a flywheel. thanks