I have an older pro-m 77,it was et up for 30# injectors but i got it used and the sensor cover was off, I've never used it at all, i want to recalibrate it for 42# injectors but iheard that pro-m went out of business. i have a c+l 76mm for my 42's but i think the pro-m is a better set up, any input would be cool otherwise this is going on ebay.