Hi!
I'm new in this forum, in e-drums, in fact, in drumming.
Recently bought a used DM8 Pro to expand the little DM6 I have used for one year to learn. Pretty happy with the kit and I'm just starting with it. The only awkward thing was the "real" hi hat pedal. It wasn't consistently making the chick sound when you depressed it at the same time you hit other pads. I've read in many sites this is the weakest part of this kit. Also, read there's something coming from Alesis that should make us very happy. (Look for the Alesis Pro X hi hat). Until that, I saw many mods you can make to fix the original pedals problems, but found another very easy fix that worked for me and wanted to share.
I opened the whole pedal and found the little circuit attached to the 1/4" plug. It's quite simple. One of the components of the circuit is a plastic tape with two filaments inside that is attached to the base of the pedal. When you depress the pedal, it press a curved rubber part that then depress this tape. Depending on where the pressure is made on this tape, it will change the resistance of the signal that passes thru it.
I was hoping to find a way to expand the min and the max point, but realize this wasn't possible without changing these components. Although, I found that in my pedal, the reaction (measured by a multimeter) was taking place on the last 1/2" of the tape which is about 2". So I decided to see what happens if I put the tape further on the back. I mounted it as back as I could without it disrupting the back screw on the base. Then assemble everything back and make a new calibration to the pedal. I was very surprised with the results. Now the pedal works 100% when depressed and I didn't had to trim the calibration as before. In addition, I found it easier to control that half open sound that I didn't get before this mod.
I would prefer to have another type of hi hat like Roland's or Yamaha's that can be mounted on a real stand, but until then I'm very happy with the response I'm having now.