Ah thanks, Had a late night and got it all sorted out.
For others - info that might be of use - I used a sharpie to black out the selector plate and then all worked just fine.
I'm also running similar battery though I just put in a 130 spring as I'm pretty sure mine came with a 90 (300fps on .2's - UK spec according to LCT).
Accurate range now is unbelievable though I think I'm pushing up around 460 fps - will crono later on, motor is getting a little warm.