Good information jakej. I have the CGR30 and initially had the same trouble with the OL2s and the loss of the screws. I solved the screw loss by working over a sticky pad used at the entrance of clean rooms to collect dust cut to fit the work area. The screws fall to the sicky pad and are easy to find. The second thing I did was to magnetize the hex key to hold the screw in place. and I made a gauge to strip the wires to the right length. After that, no more flakey EGT/CHT readings. I do like the idea of the shrink wrap to keep dirt and whatnot out of the connectors. Now, I have to ponder which connectors I'll use...I was going to go with the Dynon supplied, because of the issues with the OL2s, but now, I may reconsider this and go with the OL2s. And spray them with contact cleaner before I use them.