Cam Chain Replacement

[CountFazer]

Hi all,

I am replacing my cam chain on my 1998 FZS600 (~70k km). I have read through the service manual, the haynes manual and some of the forum posts as well as youtube videos. So I have a good idea about what I need to do, though I do have some questions.

1. What's a good way to secure the new rivet linked cam chain to the old cam chain while pulling it through?
   I'm thinking some string or a zip tie where the rivet should be, though I'm keen to see what other people have done.
   
   
   
2. Do I need to replace the cylinder head cover gasket?
   [size=1em]I've seen this recommended in the service manual, though have not seen any mention of needing to replace it elsewhere.
   
   [/size]
   
3. Is it necessary to remove the radiator?
   Seen this in the service manual but not in haynes.
   
   
   
4. How many rivets are there on the cam chain between the marks on the sprockets?
   I will probably end up working this out by lining everything up properly but it would be a good additional check.
   
   
   
5. Do you have any tips or hints?
   

Thanks in advance.