Oil leak: Real one

I replaced the timing chain/gears on a 1275 over the winter.  It's now PUKING
oil.  Don't whether it's the timing chain cover gasket or the seal.  Both were
new, of course.  Gasket was installed dry...should I have RTV'd the little
motha?  Have new ones coming, but does anyone have any suggestions as to what
I did wrong?

Geoff Branch '74 Meejit '72 Inno Mini  "both on their knees at the moment"