First off I\'d like to say, VERY nice work here. The need for larger SRB\'s has finally been solved. Although, not giving them a removable 'top' is a mark against, imo. Its always fun to stick a shoot to a srb or a few different nosecones. With your engines, you have added much needed 2m engines. That being said, I have found that when making a rocket upscaled enough to use your 2m SRB\'s, your engines buckle on the pad. I had to double their crashT just so I could get the rocket to sit on them.