Hey i am relatively new to solidworks so i am trying to build a model of a downhil bicycle i designed. I have created the top and bottom tube from two seperate lofts and then mirrored these two features to create a single body. Here the problem comes in, i figured that i could create fillets to smooth some of the edges instead of drawing fillets into all the loft profile sketches.

Apparently this isnt the case however. When i select the left top edge of the top tube it fillets as expected but when i select the right top edge for example, it doesnt want to create a fillet. Also i cant seem to create a loft between the frame and the head tube ( tube that holds the fork). I dont understand why something that should be so basic is turing out to be so tricky. If anyone could give me advice i would greatly appreciate it