I did the clear tube mods a couple of times now and it seems I get it perfect at the 3mm mark and when I start her up and run her for a bit. The fuel level goes whack and changes on both carbs. So im beginning to think I am doing something wrong somewhere along the line. So if anyone has some good tips or can help me on what keeps changing the fuel level please chime in and help. I am getting pretty sick of trying to accomplish this mod.