Need to make smart table rails bigger

I just recently purchased the smart table and the ez guide. I used them for the first time just this past weekend. This post will be about the smart table. I'll create another one for the ez guide.

While putting together the smart table it appears to me that the rails (the plastic pieces that attach to the 1x4 material) need to be just a tad wider. They were a bit difficult to put on and since they are a bit smaller, in width, than the 1x4 material I found the 1x4 didn't sit flat in the rail. Because of this it seems as if the rail is more crooked (even after securing to 1x4 with screws) and as a result doesn't slide as well when put into the guide. Any chance of making the rail just a tad wider, like maybe 7/8"?

Thanks,
Nick

I had the same problem and ran my 1x4's through the table saw to take a 1/16 th off. Worked just fine then.