Re-installing a HM with torus cover?

[spitfire_er]

I'm getting ready to put my 55 HM back on my engine and had a question. I bought a gasket set for the torus cover and it also came with the crank shaft gasket.

I have been reading around and I read somewhere that a few guys recommended putting a thread sealer on the crank to try and avoid leaks. They also said not to use anything like RTV, but there is a special sealant you can use for this type of application.

Does anyone have any experience or suggestions for putting this thing back together. I'm not sure if I should use extra sealant or not and if so which one to use.

thanks in advance.