TweetSlin will def. help with putting on mass no doubt. If this is your first time using slin then I wouldn't go past 8 iu's PWO only. Be extra careful to get in your carbs after your injection because you are going to be very insulin sensetive. Dont run the IGF any longer than 5 weeks as well as the slin. If you want you can run them both at the end given you have at least 5 weeks off both of them in the middle of your cycle.
Be sure to follow the 10 g of carb per IU rule*********