Because of the volume of cast iron chips (dust, really) generated by the machining, it's best to do the lip seal conversion with the block stripped down to bare bones, then thoroughly pressure washed afterwards. It's a permanent fix, however!
Jerry


"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!