Wise words Waz, but they had no preslotted ones in stock and I assume you still need to massage them anyway, as each fretboard would be different thicknesses etc.
At around $30 delivered (I did get the one impregnated with PTFE) I'll sneak up on it real slow like
It's all good practice for when I fully handmade a guitar.
I am going to order a new kit some time this week. I've had it picked for a while but now I'm second guessing myself.