Well the day has come for me to purchase a Crank. I shot my MXB Charge past 2 days about 30 times. My back got to hunting so bad i had to come in and sit down.Had me sucking wind with the pain. Found out they were discontinued, but i found a few on flea bay & a riser lvl for my MXB400. So they will get here to Capitan New Mexico next week.