Led Zeppelin - The Ocean Tabs

This song is The Ocean by Led Zepplin. The very last notes where you slide
down, I believe that they are right. I am not sure but I do not have a les 
paul to get the exact sound so I don't know.
Riff A  Play 4 times.

e--------------------------------------------------------------------\
B--------------------------------------------------------------------|
G--------------------------------------------------------------------|
D-7--7--7--5-------------5--------7-----7-----5--7-------------------|
A------------------5--7-----5--7-----5-----5-------------------------|
E-------------8\5----------------------------------------------------/

When the singing comes in you play 4 chords. D,C,A,G.

e--------------------------------------------------------------------\
B--------------------------------------------------------------------|
G-7-7-7-7--5-5-5-5-----------5-7-7-7---------------------------------|
D-7-7-7-7--5-5-5-5--7--5--7--5-7-7-7---------------------------------|
A-5-5-5-5--3-3-3-3--7--5--7--3-5-5-5---------------------------------|
E-------------------5--3--5------------------------------------------/
Riff B

The last part consists of 2 chords D and E. 
I believe this is right but it is hard to hear and I don't have one of those
things that slows it down or that you can set just to hear rythym or whatever.
This is how I play it. The strum is eighth notes for 4 beats.
1 and 2 and 3 and 4 and. Then switch.

e--------------------------------------------------------------------\
B-3-3-3-3-3-3-3-3--5-5-5-5-5-5-5-5-----------------------------------|
G-2-2-2-2-2-2-2-2--4-4-4-4-4-4-4-4-----------------------------------|
D--------------------------------------------------------------------|
A--------------------------------------------------------------------|
E--------------------------------------------------------------------/
  D                E

I am not sure about this either cause I don't have anything to slow this down
but this part where it slows down is out of a penatonic scale in E starting
in 7th position.

e--------------------------------------------------------------------\
B--------------------------------------------------------------------|
G-9--7-----------------------9--7------------------------------------|
D-------9--7-----------------------9--7------------------------------|
A-------------10--7--5-------------------10--7--5--7-----------------|
E-----------------------7--------------------------------------------/

You know how many times it is played. That is jus how I play it.
So that's it. If you have any cool tab or like guitar or whatever