I have a 1997 e320 HFM-SFI engine
Hate to bring this up again, I have read through most of the posts on the timing cover gasket replacement...I have a question that I cannot find the answer to. I was reading on ALLDATA about the replacement procedure and it said :

1. Remove guide rail at top (42). NOTE: If the top cued guide rail (42) is taken out of its mounting, the pressure pin in the chain tensioner is moved one detent in the pressure direction. The chain tensioner must be removed to avoid the timing chain being over-tensioned.

So If I remove the top guide rail that is attached to the timing cover, Am I going to have to remove and reset the tensioner?
I have everything disassembled down to removing the bolts on the cover.

Also My son worked for Toyota and he recommended the Toyota black sealant, is this the same as the loctite, since I have a few tubes of it that he gave me. Thanks for any help.
Thanks.

P.S. My Son is in the USAF and just drove his 1979 300sd with aprox. 300k mi. from Atlanta to Phoenix, without any trouble.