Unfortunately it's impossible to make it such that the system will allow a WTB instead of a FS thread before you reach the 25 post limit. Whining about it won't get you anywhere either.

I needed an engine before I had my 25 posts but I just sucked it up and within a few days I had more than 25 SOLID posts under my belt. It's a system that helps us weed out a large portion of the degenerate fucktards that are out there just trying to make a quick buck or scam us out of our stuff.

Erik P.
Official 2GNT thread Hijacker
Some say that he's driven over more Covenant than he's shot, and that his grenades aren't where you'd expect them to be...
All we know is, He's not The Stig... But he is The Stig's Spartan cousin!