gearbox oil leak

ok so i am going to tackle the prop shaft oil leak on my new to me 2008 i also bought a new seal from Martins shop as it seems a no brainer not to do it when in there , i am only going on what i hear about the prop shaft part , i have my JD weld epoxy ready to rock , so i am taking it that the weak bit is on the inside of the splined part at the bottom that needs to be sealed of is there a plastic plug thing in there that needs to be taken out first any tip bits would be greatly received

so i managed to the the job done but i was not successful, the prop shaft part once i got going was easy to fix and worked well but the oil seal did not , somebody in front of me already changed the seal but they damaged the casing trying to get it out , i tried to seal this but sadly it has not worked out , so the box is going to get changed and when there i will do the clutch , for any one else doing this job dont let this put you off the prop shaft was leaking and it repaired well with JB EPOXY GLUE stuff i allowed 24 hours to dry properly in the house lol its a fiddly job but only 9 bolts in all , i had already cut a 50x50 hole out and made a plate to refill the gear box as its a pain in the neck trying it on the floor , apart from drying time i was about two hours all in,   did take photo,s but i can see how to upload them

I have exactly the same issue with the prop shaft squirting oil. I would love to see the pictures if you do manage to work out how to upload them.
Is it just a matter of undoing both ends of the prop shaft and pulling it out?
I am a bit hesitant to attempt this as everything I try to do looks so easy when watching others do it on youtube. When I have a go it turns into a right pain and I end up spending hours trying to undo nuts which have either been stripped or someone has overtightened.

the joys m8t as long as it dont cost a fortune time is cheep and in my case its lying flat on my back , no ramps lol  i never found how to upload photes from my desk top yet