Interesting question as I am also "refreshing" a A833 gearbox.
I purchased the Kindle version of the Jamie Passon book "Chrysler A833 transmissions : how to rebuilt & modify", and Mr Passon highly recommends to use silicone RTV on the bearing retainer gasket and bolts.
Just my 2 cents, I know nothing about gearbox and I learn something every day :rolleyes:
I supply the gaskets to the previously mentioned...any why you would use silicone on them IDK. I do not, and have no problems. Under the head of the bolt is the only place I ever use sealer, and I have been using a non-hardening sealer.