Any comments on the Excel accellertor 22 mag pistol. Mine has not worked since day one. Jams all the time. Sent it back for repair . They have had it 3 months now and still no return. I call , send e-mails , and rarely get a response from them. Then it is just" we will look in to it when we get to it , we are behind". Any one else had exsperinces with this pistol?