help with mamba and program fhss-2 airtronics
 

got the new budget airtronics fhss-2mx sport and it solved my range issues, i did not program my mamba monster with radio i just installed it and went, so when it was time to change my settings in the esc, it would not calibrate the reverse endpoit like there not enough throw to engage at setup and if i got into the program i could not select setting using reverse cause it was not setup at first , but if i use my fm airtronics it will program and run fine

Whenever you change radios you always have to recalibrate it to the esc (or the esc to it, whatever). I would reset all your settings to default on the new radio, then go through the intial setup/calibration routine as outlined in the manual- that should solve your problems.