I'm very surprised to hear that you are not getting fills as expected while using the TT simulation environment. Please enter a ticket with the TT support team.Since TT was mentioned, I decided to try their demo. Just opened it. Not getting filled on a lot of the contracts, unlike many other demos I have tried. Interestingly they have an 800 leg spread, which I never even contemplated before!!
Regrading an 800 leg spread...where are you seeing that?