I haven't shot the model bag you got so i don't know why its pulling hard. Never use straw or hay bales just asking fer trouble. I use a morrel crossbow yellow jacket bag target. Wally worlds yellow bag target is ok i have one of them. All my arrows pull easy. BH target Rhineheart 18-1 don't shoot bag targets with BH's. 90% of these sales clerks don't knowed nutten about CB's & most don't shoot one. Research online fer answers