Looking for an episode

I vaguely remember an episode I've watched as a kid (some 15 years ago) where Bonkers gets erased little by little and Lucky Piquel (grudgingly, of course) has to save him - I think the climax is at the top of a tower, but I'm not sure of that. And it's not the "Hear no Bonkers, see no Bonkers" episode - watched it not long ago and it's not the one.

So... Does it ring a bell to anyone?
:o]