canon 28-70 2.8 L lens rebuild timelapse

i took apart and rebuilt my canon 28-70 2.8 L lens as some of the guide screws had come lloose and fallen out meaning the barrel was sticking on zooming, id sent it to canon and they’d declined to fix it as it is no longer repair centres would not fix it either. im no expert never taken a lens apart before so might have done it wrong but its fixed now so im a happy. messed up a few times on reassembly and had to go back a step or two. heres the diagram i used