Gotta leak on my 88 vert, Stuck a card board under there in the beginning of the week and it had a small puddle by the end of the week. Would this be a major problem or somethin I can fix on my own?

 

Without knowing where the leak is,your guess is as good as anyone else's.
You will need to investigate further to pinpoint where it is coming from.
Only then can anyone give you any info on whether it can be fixed or rectified easily.