I make the spacers to be a press fit in top of rods, it's much easier to do with the rods that you're going to use there, as that alleviates the hassle of "you sent me these and they don't go in" etc.
I have one set of damper rods I can do on an exchange basis for anyone who needs them doing, including opening comp holes up and welding up the rebound hole.
Or if anyone isn't in that much of a rush I can generally get them back off to you within 2 days i.e if I get them Monday I can post them back Wednesday worst case.
For curvy it's easier, I've got 3 or 4 sets of rods I can mod and do on exchange, you do the job then send me your stock rods back.
Or if anyone wants to send me loose forks or bring an entire bike to Halifax, no problem