Well, thanks for the manual and for the dimensions. The seller was contacted yesterday and I offered to either receive a partial refund for the cost of getting dividers made (approx 20 bucks each) or that he provide a full refund and also pay for return shipping. He replied stating that he'll get someone to make the dividers himself and ship them to me, so it's good to have the info you provided. I'll measure my dividers first for an accurate measurement and just have him make the low dividers the same width as mine but 1/2" shorter. One long side should receive a 1/4" notch every 2 inches. I'll remember to measure the width of the plexiglass as well.
I'm glad to hear that the washer works so well. It will be great to get it working properly. Thanks again.