TR6 gearbox cover

[Paul Mitchell <paul-m@mweb.co.za>]

I am about to investigate the reason that my (J-Type) overdrive works in
all 4 gears - I suspect because the inhibitor switch is bypassed or
faulty. To do this I need to remove the cover over the
gearbox/overdrive. My book says something like 'break the seal and lift
off the cover' (after many other stage). My questions is - what forms
this seal, and what can I use to re-form it? Will a gasket sealant do,
or do I need something else?

Thanks

Paul
74 TR6 Cape Town