Can't get my model right. Too confusing. please help

Hello. I am new to Shapr3d and I’ve spent so much time on this model from direct measurements but every time I think I am drawing something on an edge or something and I zoom out and I see that it is on a totally different place of the model. It’s crazy confusing. and I just thought after hours of designing this that it was perfect, and I zoomed out and the angles are not symmetrical and I just can’t figure this out. please take a look at the back (the angle) I can’t fix that, the two sides are supposed to be symmetrical and they are not. and I can’t fix it on the back. What really confuses me is all the different sketch panes on the side. Thank you!





[Transfer - Dropbox](https://Screen recording here - Dropbox)