volumio 1.55 with 433 rf interface

Have been using volumio with a link to a 433mhz transmitter for switching speakers
worked for the last 2 years on model b
Have now upgraded to pi model 2
it uses wiringPi And rfoutlet from github
have updated upgraded re-imaged
loaded the volumio iqaudio that has on board wiringPi. same fault
rfsniffer works. codesend does not
appears to be a timer or interupt not loading as it does not transmit the codes
the output activates seems to send 1ms pulses but no data

any help apreciated