Theodore "Ted" McElroy who started out as an American landline Morse telegraph operator and became a radiotelegraph operator with RCA (he transitioned to Continental Code on-the-job at Radio WCC) at one time held the world-record for Continental Code reception in sanctioned competition. He believed in lots of hand body-English keying the bug. Other commenters have in past discussions here pointed out, correctly, that because a semi-automatic key has a lot going on mechanically the pendulum really has to be displaced a bit to make things sound good. You can set up a bug to send clean fast, set it up to send clean slow, but you can't have it both ways. That's why I think many bugs just will not tolerate weight + weight + weight. There is some compromise regime. On another subject--Non-Skid for your bug, paddle, or straight key-- Far superior to a computer mouse pad is the cheapest thing you can find-- Go to any dollar-store, go to houseware items section, and buy a roll of rubberized shelf-liner mesh for $1.00. You'll get about 2 yards, enough to outfit the telegraph office at the New York Herald or RMS Titanic's radio room with enough left over to open a year's worth of dill pickles. Finely engineered in the PRC for your communications efficiency. Wicked FB!