Bike now starting easily and running quite sweetly using the 749 ECU and Dash along with a PF1C Linear TPS and the 1098 modified Loom
Not sure why but on one of the 749 ECUs I tried it keeps dropping out the rear cylyinder dispite it being the same ECU hardware build and same program loaded.
Checked the readings of the coil drivers and they are both fine on the multimeter, so a bit more investigation to do there. But as mentioned its running well on the other 749 ECU