Kind of surprised at your change in steering. I'm not sure how the Throttlemeister would do that unless you moved your hand position all the way out to the end of them. That isn't necessary, if you are. Keeping the hands tucked in at the normal place on the grips works fine for me and my wife. I have seen no change in steering with the Throttlemeister on the Spyder...or on my BMW either. The risers themselves, on the other hand, do significantly reduce steering effort. They took a bit of getting used to.
The Throttlemeisters do go in hard on the riser bars. That is because of the precise machining and the closed-end space. They airlock. A small bleed hole in the bars would help a great deal. No matter how much you loosen the Throttlemeister, it won't bleed off much air. On the other hand, they come out very readily, just loosen and pull. I had mine on and off a couple of times, and there was difficulty only in the insertion into the riser bars, not the removal. Of course if the air bled off over time, it could be just as hard to remove the Throttlemeister due to the suction. We'd have to ask MM if drilling a small bleed hole in the bars would compromise their strength.
As to the mirror obstruction, they do block the view much more. If you have the heavy version, it will be worse. I don't want to get rid of the Throttlemeister, though, so I just talked to Magic Man about his new ESI (NMN) Spyder Mirror Extensions. They move the mirrors out as well as allow vertical adjustment. Looks like just the ticket!
