Ya, the times I played that table I found the center bottom of the corner ramps to have a bit of a dead spot, however the table seemed fine overall. My opponent was a newer player, so it was likely him allowing the ball to roll slow into that part of the ramp area... As for me, I haven't really played 1M goalie in 20 years, so it was a novel detail for my mind to recognize and avoid. The american style 3M goalie does eliminate that ramp spot but introduces dead corners. There are times in my life I liked 3M and other times 1M.
Dead spots are an unfortunate part of the mechanics of a foosball table otherwise the figures would take a great deal of stress from dual contact situations. The best you can do is get different balls to improve the slow rolling characteristics. I would and did get a variety of balls to see what works best for certain recreational tables; That factory yellow ball is more of a finesse type ball to help you learn technique; Nobody I know really likes it. Warrior designers likely picked it to temper the table a bit so brand new players have some element of control. The tornado ball is pretty good ball, shelti very similar, and the fireball faster and slightly more wild. I think warrior offers a faster red ball as well.
It's funny, now that I think about it, as players progress in skill and experience their subconcious just works to maintain positive control and avoid losing the ball to dead zones; when it does spit out, players give it a quick slice whack to get it away from both the dead spot and the opponent. If I stall a ball, I look at it as a ball handling failure. It is a good opportunity to cuss softly and rid myself of any unwarranted ego I may have developed.