Yep, welcome to the line leveler...this system given the proper staffing numbers has the potential to work, yet it has never been given those staffing numbers, so its solution is to level the playing field by robbing from the rich and giving to the poor...it runs and runs and runs and eventually is manually stopped and the remains (slop) are inserted by human hand. Get used to the words - Unable to build line due to Overall Solution Constraints (they may have changed the wording a little but its still the same meaning). You need to be above 40% BES or CAT now to see any potential bidding power and even that is very conservative based on how liberal your bids are and how limiting you are with your Avoid statements. You can stagger and chain link embed the Avoids and Awards in one bid line which seem to have the best outcome since there is no guarantee your line choices will get X number of looks at by the system. It is not dynamic by any means but rather a means of the number system cranking over and over until the lines "appear" fair to the PBS admins. It is not like the Flicka Jetblue system where you can dynamically see how your inputs change or the plausibility others changes may have. All in all, this PBS system sucks in its current for and is so complicated that any errors are untraceable after the awards are given due to the complexity variables of the award solution in itself. It's like playing Rummicube where one person goes off on a tangent to try and eliminate all his tiles but when confronted with an unsolvable situation can not return to the starting path because the road to go back and the breadcrumb trail has disappeared or become obfuscated by the system itself. Enjoy. P.S. I hate PBS at either 80% or 12%