"I was just kidding TCA - when i recalled your going through ____ filters in one level.... I used a few on my pic ( as you could see above the smelting unit. I used....some kind of converging tile one...Funhouse is the set - an invaluable set indeed. No harm meant...:-)"

Thanks for the pointer to the filters, SNY. Sorry about regurgitating the mutant frog on level 1508-a3. I was planning to do something fantastic to it but ran out of time.