Any chance you can send me or post a photo of the 3pt set up. I'm probably going the change mine over to 3pt and alway looking for different ideas. Yours looks about the same as mine exspect yours is a check rower. Probably a 102 or 104. I bought my manual off ebay. It's a reprint for about $10/$12. It's about 32 pages or so and has been helpful. seed plates for it are readily available. I know you have some plates hanging there. If you have the sweet corn you can match the plates up easy enough. If you want to email me your address I'll send you a link for the planting info for the richmond hopper to veiw or download for free. This will come in handy for matching seed plates.