This isn't my idea -- it's around the web. I don't have a schematic, so I'm not sure what's connected to what. I did check and the 12R is not connected to the XTAL, so the flywire seems needed.
Those R,C appear to be connected to the original XTAL, but the caps look like ceramics (I didn't try to measure). R60 (marked 01A -- what's that notation ?) is 100R, R61 (marked 01E) is ~ 700k (inverter bias ?). I'm not really worried about overstressing the TCXO.
Does anyone have a schematic of this area ?