[niterydr]

it should slide on easily.
having to pound it on is a great way to mess up clutch disc's, throw out bearings, input shafts, clutch covers...etc..
make sure you lubed the input shaft and the splines on the clutch cover.
Rotate the motor, sometimes the splines dont match up on the input shaft and clutch disc.
Make sure all wires are out of the way, I've seen them get pinched before.
Start with the 'diff area' of the tranny (where axles go in) is higher up than the other end and rotate it down into the 'hole'. You can't get it to rotate up from the bottom.
good luck.