Timing chain too short

MRE 1262 from Mancini - bought a few months back - fitting it this past week & surprised to find chain short. Called & they sent another quickly. It arrived & its the same - too short. Called again & they are sending comp kit # 7103. We'll see. Anyone else's too short ? -Mike
No reason why that MRE 1262 wouldn't fit. You're doing something wrong with the installation it seems.