Does you Tudor have 30 type front fenders or 30-31 type front fenders? If 30 type, welting only goes down the seam between the running board shield and the fender, it stops at the runningboard. If 30-31 type fenders the welting starts on the top of the frame, between fender and running board shield, turns and continues between fender and running board shield and stops at the running board.
Note: there is no welting between the end of the fender and the running board on either 30 or 30-31 type fenders.
On the rear fenders the welting starts at the front between the fender and the bottom of the running board shield, continues up to the top of the shield turns and lays between the body and fender all the way to the back
If I had a picture I'd post it or you might contact someone in your area that is fimiliar with 30 -31 type fenders.
Ron