Decided to dive into SB 14- 01-31 so that it is complete before mounting the stab to fuselage. The SB adresses cracks found in the forward horizontal stabilizer spar. The SB only requires an annual inspection for cracks. Since I am not yet flying I decided to complete the repair now so that I do not have potential issues later. Drilled out all necessary rivets. The reinforcement rivets on the front spar were the hardest and I elongated a few holes starting out therfore I will be replacing parts that are out of tolerance.