Not neccessarily bad tranny.

Try this: Go clutchless to test the tranny. Here's how you do it; Run second gear up to about 4500 RPM's. As you let off the gas shift into neutral without the clutch. Blip the throttle up to about 5000 RPM's. As the RPM's come down off of the throttle blip you should be able to slip into gear fairly easy. Remember to be smooth and don't force anything.

If you can't get the trans to shift this way you have diagnosed a synchro problem. This is bad.

If you can get it to do this it's probably just the clutch. Not so bad.