If dissatisfied with a part, I think of salvage and rework first. Can I mod and come out OK for its use and purpose? Or how bout relocating a mounted item or cheating a dimension. Over or under size a fixed or moving piece. I have those liberties as my engines are not built to a plan but wild catted to my ideas. I have a good box full of discards over the years of machines parts mixed in with stub pieces and ends of bar stock. One thing in favor of a redo is that it will take you half the time for a duplicate. You made the original using a little more time and now you know the set up for a repeat by dimension, cutting tools, drill bits, tap holes, springs, fasteners, etc. My best guess is you will belly ache over the. "not quite right factor" for a few hours. Decide to redo the next day. Dis-assemble, remove and remake sed part and after a few hours in the shop be back in a couple of days where you left off again. (unless Ebay and UPS is involved with an order)!