cswanic - not sure I understand your question. As a note anyone can buy as many extras as you want during the group buy and from the beginning I expressed that this is a limited production run and that little to no spares will be made. Every spare part is listed on
www.ModelFkeyboards.com.
If you order your keyboard and then decide later you want extra parts, that is ok - you can place an additional order as late as 6/30 for the spare parts.
You could even buy a whole bunch of spares in anticipation of future projects that other people decide on.
I am hoping that someone will volunteer to order a few thousand spare barrels and flippers to sell later on for future community projects. Some people have expressed interest but I have no volunteers just yet.
My recommendation is to buy spare inside foam and spare flippers and springs. This is not finalized but I do expect to include some leftover springs with everyone's order because springs may wear out and the foam may become less spongy over time- no one knows. I expect to make the springs with some of the finest quality Japanese steel (the specific variant is actually advertised as piano wire!).
Part of the quality control of this project will be making sure all of the springs buckle successfully and reliably. I expect to test every keyboard before mailing it. This is why I have offered the option to pay a little more for an early serial and then I will put you ahead of the line.
iss the AT barrels are the ones being used for this project and they have the notch on the right side. The XT barrels have the "pin" and are used in XT style keyboards.