Grafting feedscrew (Q from a new guy)

[Pete O]

Is crashing as much an issue with the crossfeed as with the longitudinal feed? The drive gear on the leadscrew of my lathe is a slip fit with a tapered pin, so the drive is only transmitted by the pin. However if I introduce a clearance fit into the middle of the crossfeed screw, as it is only supported at either end, I think it would cause problems with sagging in the middle (like me).
I'm not sure I have the confidence to produce a tapered fit, I'm only going to get one chance at this (unlike the threading of the new nut, thankfully) and don't want to risk destroying the driven section of the shaft.