front main seal on tranny bad, i think!!

[TireSmoke420]

after i got my new tourqe converter put in. and i drove it for a lil bit i started weeing huge fluid marks under the truck in the mornings. i think itws the front seal. it never leaked bfore i put the t/c in. could it have just started casue i was up there dinking around or what. how hard is it to change the seal on a turb 400. damn im really not looking forward to taking that thing out AGAIN. i really wished the next time i took it out was going to be to put in a muncie. ohh and i have found out the filler tube has gotten a hole rubbed in it sum how. like half the fluid i put in comes out half way down. any one got a tube for a 400 they need to get rid of.