I’m deeply flattered that Malcolm Vant asked me to perform at the St Lawrence Division clinic day next Saturday. I’m also deeply shocked that it starts at six in the morning!
It looks like it’s open to members of the SLD only, but the meet page lists instructions for joining if you live in that area. I presented a similar clinic to the local NMRA division in November. The slides are below, but they’ll be better with the narrative (promise!)
Pembroke:87 
Is the forward coupler pocket of the new loco large enough to accommodate a modified Accumate or are you going to print one?
I haven’t tried it to tell the truth, however it is should fit. It won’t allow for much swing, but that is frequently the case with prototype front couplers on steam.