You wanted to get past the gap on the way to fight Screetch? Well, this does the trick:

https://twitter.com/i/status/1016084028019970048

However... it is not quite as useful as we'd hoped. In fact, it's not really useful at all - you still have to fight the boss, except now it's glitched and impossible to complete.

https://twitter.com/i/status/1016084208714899456

Nevertheless: we can cross Skreetch Gap off the list. Maybe someone will find a use for it yet.

Now I'm off to test my theory for how to get into Kazoo's Cave without the leash thing.

Awesome! I need to start thinking out the quick exits from pinball sections. I tried to use a slug from that area, but forgot you could exit again to the left. I couldn't get there in time exiting to the right.

So the hunch about Chief Sal being in place before fighting Screetch was wrong. Darn. Next request: find a way to get through boulders without pushing them from the other side :D Several would be interesting, but mainly the one below gorilla woods (near the crystallized guy) and the one to the right of the god egg.