Use masking tape as close to the joint as possible. Then fill the joint with green puddy or what ever you chose to use. After the joint has cured,simply scrap away the the remainder of the filler,sand smooth and paint.
Thats simple huh....
P.S I know how to do this, I've hi-hooded two NS SD-40-2's, worked out just fine.
Patrick
Beaufort,SC
Dragon River Steel Corp {DRSC}
Fear an Ignorant Man more than a Lion- Turkish proverb
Modeling an ficticious HO scale intergrated Scrap Yard & Steel Mill Melt Shop.
Southland Industrial Railway or S.I.R for short. Enterchanging with Norfolk Southern.