So I have done two ripcords with the diet RC mod now and I decided to start experimenting with it a little more. My problem with the diet RC is how light it is. I like tops, especially fixed tip tops, that are a little on the heavier side, but with a low center of gravity. So my solution was to add weight inside the top close to the tip so that it maintains that low center of gravity. After several failed attempts I came up with an idea that works, sort of. I went to a hardware store and purchased several washers that fit deep inside the top. I placed a few washers in the top with spacers in between them to keep them from moving around. Then I took a screw and screwed it down into the tip. This holds the washer's in place. For me the biggest benefit of heavier tops is learning to regenerate. It plays pretty good, kind of like my quicksilver with a plastic cap.
I'll try and get some pictures up later of what the assembly looks like outside the top.