In a medium bowl, mix together 3/4-cup barbeque sauce, jam, and soy sauce until well blended.
Place a layer of the ribs in a 4-qt.
crock-pot.
Pour on 1/3 of the sauce mixture.
Top with another layer of ribs and half the remaining sauce.
Top with the remaining ribs and sauce.
Cover and cook on "low" heat 9 hours, or until the ribs are tender but not completely falling apart.
Remove the ribs to a serving dish.
Skim off and discard any fat from the sauce in the slow cooker.
Stir in the remaining 3/4 cup barbeque sauce.
Pass the sauce to spoon over the ribs.
For thicker sauce, discard half the remaining sauce in the crock-pot before adding the rest of the barbeque sauce.
Ready in 9 hours.