I have 3 windows that i'm trying to match sill heights on. This is like a bay window (not a true bay window because it's 3 separate windows). I cut all 3 window sills with returns but I wanted to match all the sills making the appearance of one continuous sill (if that makes sense). The problem I ran into is all 3 windows are at different levels. The smaller left window is almost 1/4" higher than the bigger middle window and the middle window is about 1/8" higher than the smaller right window. So just to clarify, the returns on each sill will butt up to each other (if I can fix the height problem). Can anyone help with solutions to fix this?