rear engine seal leak

[Reconisance]

since i had my new trans put in, the seal between the engine and the tranny leaks oil. if anyones familiar with army classifications, its a class 2 leak, pushing a class 3. should i be worried about it? my garage floor is starting to look like a concrete dalmation. i checked the oil, its within the level, but i thought i'd ask the experts here
if it is bad enough to worry about, what can i do to help seal it better or whatever. help is appreciated, thanks

 

[modo]

needs a new rear main seal. if the crank is worn enough there is a sleeve kit that will allow the new seal to not leak. also make sure your pcv system is functioning properly as if it is not that will push oil out of every little hole there is