So I have been in the process of modifying my SWS X28 (similar to an Echo1 m28) and currently am trying to fix the dreaded right hook of the bb's. Trying to figure out what caused it i took out parts of my hop up chamber one by one but I eventually took everything except my bucking and the chamber itself (there is no hop up arm). Now when I shoot my rifle the bb obviously drops, but after 100 feet or so the bb still curves to the right. I have already tried re alligning the parts of my rifle several times so please don't suggest that as a solution. From this the only remaining possibility that i can see is that the bucking is being pushed inward (creating a backspin on the right side). Is this backspin happening because of the small outward nub (for lack of a better word) on the outside of the bucking that fits into the slot in the hop up chamber being pushed inward. Would shaving down this nub possibly fix the backspin on the right side. If anyone has any experience on this your imput would be appreciated before I go cutting up my new 9ball bucking.