My apologies gentlemen.  In taking some pics I suddenly saw the easiest and simple solution--Remove screw and draft  box, remove orig coupler, insert Kadee coupler, reassemble.   Previously I was all hung up on using the larger Kadee screw and components.  Anyway, thank you both!!//Ed

Quote from: bparrish on December 19, 2020, 12:55:10 PM
Ed....



Could you put up a photo or two that shows the craft box and the coupler you want to use. 
 

See ya
Bob

Will do this eve.

Older thread this subj discussed using HO couplers (148's) which I have done on several cars.  For the Porter figured out I'd need the longer 146's.  Removing orig couplers found a tiny screw and a 2 step bolster. At a loss to decide how to modify this for the 146's.  Any suggestions most appreciated//Ed