One-Up/Two-Up Y-axis extra bearing mounts

Ever since I received my Two-Up, and put it together, I had a few areas that I wanted to improve on. One area was the gantry setup. The second has to do with the bed travel and error. The bed in my case had some very noticeable error. If I were to face the printer and hold the left front corner of the bed and push it towards the back, and then back towards the front, I would see upwards of 2mm of play, even with the bearings glued down.. You would really see this play when the print is doing a t