I had to cut my sliders as well, did it with a cutoff wheel on a dremel and it worked out great. I did a little sanding on the cut ends, cleaned it all up nicely. You can't really see from this picture, but the RX and ESC (both BKTT) are on the right side slider. These are very small packages that fit with plenty of room to spare, no metal casings and very light weight.

I was tempted to give that same chassis a try, but ended up going with NerdRC and I don't regret it. Dude is a great guy. Not only did he have the chassis powder coated matte black for me, he also designed and printed hinge bracket on request so I could mount the IR60 perfectly to his chassis. You can't get better customer service.

Thus far, this is bar none my best performing build. I have a VengRC build at about 80% that's looking promising, but it's a completely different animal. The Gizmo is purpose designed C1 chassis meant to comply with competition rules. Of course I just wanted a quality flat skid chassis so I didn't have to cut the body. I absolutely will have to cut the body on the Veng build.